Tuesday, October 16, 2018

Shoot The Moon: Night Photography Tips

When the sun sets and the rest of the photographers pack up for the night, you can get some of the most stunning and unique images
Yosemite National Park - night photography tips
Rising full moon. Bridalveil Fall, Yosemite National Park, Calif. Canon EOS-1Ds Mark III set at ISO 200. Hart used a 2.5-sec. exposure at ƒ/11 and a 3-stop grad ND filter to create the image.

night photography tips
Moonbow and Big Dipper, Lower Yosemite Fall, Yosemite National Park, Calif. Canon EOS-1Ds Mark III set at ISO 800, 30 sec. exposure at ƒ/4. Keeping the exposure to 30 seconds or less prevents the stars from becoming streaks.
I started “shooting the moon” in a quest for unique photos, and while I’m certainly happy with my results, I’ve discovered that the actual experience of moon and moonlight photography is just as rewarding as the images I bring home. When the sun departs, so do the photographers and other reminders of a more hectic world—in their void, I can explore landscapes freely, set up my tripod wherever I want and simply relish the solitary wait for moonlight in some of nature’s most special locations.

Gear Up

Darkness, cold weather, night breezes and unfamiliar terrain all conspire to magnify the shortcomings of even the most robust photography equipment. Before embarking on a nighttime shoot, make sure you have the right equipment, it’s in good working order, and you know it well enough to operate it in the dark.
With exposures measured in seconds or minutes, of foremost importance is your tripod. If you don’t have a rock-solid tripod, buy one, rent one or borrow one. Tripod leg warmers and/or carbon-fiber legs will improve both your comfort and dexterity on cold nights in the field. If the wind picks up, adding weight to your tripod will help stabilize it—I attach my camera bag to the hook at the bottom of the center post, but a plastic grocery bag filled with dirt or rocks will do the job, too.
A remote release (wired or wireless) is a small investment that will further minimize vibration, and a locking remote is essential if you plan to shoot in Bulb mode. If your camera has mirror lockup, use it. Depending on your shutter speed and focal length, it may not make a difference, but anything that reduces vibration never hurts. In low-light focusing situations (more on this later), a good quick-release mechanism is helpful.
Batteries don’t perform as well when cold. Make sure your battery is fully charged; in extremely low temperatures, a backup battery is good peace of mind. Store any battery not in your camera close to your body to keep it warm. A photo vest makes this easier. I also appreciate my photo vest because having my lenses within arm’s reach sure beats tracking down and rummaging through my camera bag in the dark.

night photography tips
Rising full moon from Sentinel Dome, Yosemite National Park. Canon EOS-1Ds Mark II set at ISO 100 with a 1/2 sec. exposure at ƒ/14.
Keeping Warm
I never want the temperature to cause me to rush or to drive me for shelter when I’d otherwise be shooting. Since I prefer being far too warm to just a little too cold, I always dress for the projected overnight low for the area I’ll be shooting. This is most important for sunrise shoots, as the lowest temperature is usually right around sunrise.
On particularly cold nights and mornings, I wear a thin pair of wind-resistant gloves under a thick pair of warm, fingerless gloves. This keeps my hands warm while retaining enough feel to manage my camera’s buttons and dials. A wool hat that covers my ears is another important part of my nighttime wardrobe. Hat and gloves all fit nicely in the pocket of my down jacket or vest if I get too warm.
Do Your Homework
There are only a handful of days each month when the moon’s phase and position are ideal for photography. Because the moon’s arrival, departure and location change significantly each night, it’s important to anticipate, not react. If you see the moon on your way home from work and think, wow, I’ll have to get out tomorrow night to shoot that, you’re too late.
Many resources are available to help you determine the moon’s phase and position. Most GPS devices provide this information, as do many websites. One site with all the phase and position info I need is www.usno.navy.mil/USNO/astronomical-applications. Applying this site’s lunar altitude and azimuth information to my National Geographic Topo software (other map applications will do the same thing), I can calculate exactly when and where the moon will rise and set from any location on earth. Don’t forget that moonrise/set and sunrise/set times are based on a flat horizon—you’ll need to account for anything (mountains, trees, buildings) between you and the horizon.
If these kinds of computations sound daunting, don’t despair—simply knowing moonrise and moonset relative to sunrise and sunset, and the general direction (east or west) is enough to get started. And many iPhone apps offer astronomical data.
Focalware gives me all the information I need to instantly (albeit approximately) locate the moon from wherever I am. Regardless of the approach you take, the more you do it, the better you’ll become at finding the moon when and where you want it.

Photographing A Full Moon

A full moon is directly opposite the sun, with the earth in between, rising in the east as the sun sets in the west. But I like to capture detail in both moon and foreground—a sun that sets as the moon rises rarely leaves enough light to capture foreground detail without overexposing the moon. The best time to photograph detail in the lunar disk is when the sun and moon are both low on the horizon and the moon is nearly full—easy if you know how.
As the moon cycles through its phases, it rises and sets roughly one hour later each night. That means the day before a full moon, when the moon is more than 95% full, it rises in the east shortly before sunset. That extra hour or so provides ample time to photograph a nearly full moon suspended in the east above a landscape glowing with warm, late light.
Similar reasoning applies when the scene you want to photograph requires the moon’s disk in the western sky. Since the moon sets an hour (or so) later each day, you can count on a nearly full moon on the western horizon a little after sunrise the day following a full moon.
Exposing to balance detail in the foreground against detail in the full moon’s disk is sometimes difficult. Trial and error will help you find the brightest exposure that doesn’t overexpose the moon. I have blinking highlights turned on in my digital camera, but have to look very close to see them in the moon.
Shooting RAW, I’m comfortable exposing up to a stop beyond the point where the highlights start to blink, then recovering the highlights in postprocessing. Sometimes I process the RAW image twice—once for the foreground and once for the moon—then blend them in Photoshop. Since it’s the same image, I never need to worry about everything lining up.

night photography tips
Rising moon, South Tufa, Mono Lake, Calif. Canon EOS-1Ds Mark III set at ISO 100 with a 1/2 sec. exposure at ƒ/16.
Photographing A Crescent Moon
A new moon occurs when the moon is between the earth and the sun, meaning its illuminated side faces the sun and away from the earth, making it not visible from earth. But since the moon arrives and exits about an hour later each day, adding or subtracting a thin slice of detail with each passing, you’ll find its crescent near the amber-to-indigo transition zone between day and night one or two days before and after the new moon. The day before it’s new, the moon’s thin crescent hangs low in the east just before sunrise; the day after it’s new, you’ll see a similar crescent in the western sky right after sunset.
I’ve also had good success at sunrise two days before the new moon, and at sunset two days after the new moon. That extra day gives the crescent just a little more body and provides separation between the moon and the sun, keeping the moon’s crescent from being overpowered by sunlight.
On nights I plan to shoot a crescent in the western sky, I arrive early enough to photograph sunset. Once the sun is down, I start searching for the moon’s crescent in the darkening portion of the western sky. For a crescent in the east, I try to be in place an hour before sunrise and continue shooting through sunrise, long after the moon is washed out by the brightening sky.

Finding The Scene

Whether I’m after a delicate crescent or a robust full moon, I try to scout locations and plan compositions in advance. Looking for scenes that would be enhanced by a full or crescent moon has become second nature, not just on my photo trips, but in my everyday travels, as well. Recognizable landmarks, prominent features like trees, city skylines, lakes and oceans, or rivers and streams that flow in the direction of the rising or setting moon, make excellent subjects.
An extreme telephoto lens can beautifully silhouette a distant ridgetop tree against the moon’s brilliant disk, but a common misconception is that photographing the moon requires maximum magnification. Many of my most successful moon images, full and crescent, are wide, using the moon as an accent to turn an already striking scene into something special.
Photographing a crescent moon means shooting toward the brightest part of the sky, making exposure difficult. It’s the moon’s shape, not its features, that make a successful crescent image, so an overexposed crescent doesn’t bother me. And crescent moons are made for silhouette images. Look for a prominent shape—a tree or mountain, for example—that stands out against the sky. Water’s ability to reflect the sky’s light and color makes it another ideal foreground subject.
Shooting In Moonlight
On nights I photograph a rising full moon, I usually plan to stay out and photograph in moonlight. When the sun finally leaves and the stars appear, I turn my camera away from the full moon and start photographing the moonlit landscape. In most of my moonlight shots, the moon is at my back because it’s important that my subject be frontlit. Keeping my exposure times at 30 seconds or below minimizes star movement (I prefer waiting for moonless nights to photograph star trails), especially if I’m using a fairly wide lens.
The moon’s brightness varies each month, but rather than rely on my meter and histogram for exposure settings, experience has given me an exposure starting point that gets me within one stop on the first shot. I typically start at ISO 400 at ƒ/4 for 30 seconds (don’t forget to remove your polarizer!). A glance at my LCD—not my histogram—usually tells me whether I need to dial it up or down a stop.

Many moonlight shots look like daylight photos with stars. That’s partly because they’re too bright and partly because auto white balance doesn’t understand moonlight. My moonlight histogram is always skewed left and is rarely much use to me. And shooting RAW allows me to adjust the Photoshop WB slider until I find the best color temperature. Generally, shifting the color temperature slider to the left, below 4,000, restores the blue tint that gives the scene a nighttime feel.
As with daytime photography, moonlight images benefit from a strong foreground. But foreground for moonlight shooting is relative—with the limited depth of field of a large aperture, my foreground subjects are generally at infinity and large (no intricate foreground detail in moonlight). Reflective subjects like water or granite work best. Silhouetting trees or other prominent objects against the night sky is also effective. And adding a recognizable constellation to a moonlight image is a great way to make it memorable. The Big Dipper, Cassiopeia and Orion all make wonderful overhead complements for a moonlit earthbound subject.
Another thrilling moonlight element is a “moonbow,” the moonlight version of a rainbow. Unlike the human eye, a camera’s timed exposure capability allows it to accumulate light, revealing the rainbow prism the eye can’t see. To capture a moonbow, position yourself in view of a waterfall when a full moon is low in the sky, with your moon-shadow pointing directly at the waterfall’s mist. Start with exposure settings I suggested earlier and increase until you see the moonbow in your LCD.
Get Focused
Conventional focusing using moonlight ranges from difficult to nearly impossible. There’s rarely enough light for autofocus, and manually focusing is often guesswork. Fortunately, most moonlight scenes are at distances that allow focus at infinity. Infinity focus isn’t as easy as it sounds when the infinity point of your zoom lens changes with the focal length, but it enables a simple focus trick: Compose your shot on a tripod, and without changing the focal length, remove the camera from the tripod (an easy quick-release plate helps here), and autofocus on the moon. When focus is locked, change to manual focus, return the camera to the tripod, and take your shot.
Just Do It
Compared to a typical photography outing, shooting the moon adds a few wrinkles, but with a little research, patience and a capacity for minor discomfort, you can enjoy solitude in even the most photographed locations. Preparation and the right equipment will allow you to enhance any scene with a radiant lunar disk or crescent, or turn a photo that would be cliché by day into a star-studded moonlit landscape. Whether or not you get perfect results, you’ll certainly have a memorable outing and probably return home with lots of ideas for the next time.
night photography tipsFinding Your Way
Unless you stay out until sunrise, you’ll be walking back in the dark. Don’t think simply hiking to your destination by daylight will be enough to enable you to find your way back safely in darkness. Any route looks entirely different in reverse, a problem magnified by darkness, making a simple route by day a maze of shadows at night.
Stay alert on the way to your destination, noting prominent landmarks such as large trees, rocks or anything else that might stand out in the dark. If you know how to use it, a GPS can be a real help, but don’t purchase your GPS in the afternoon and expect to be able to navigate with it in the dark that night. Whenever possible, I try to walk the route to my moonlight location, and back, in advance.
Full-moon light is bright enough that sometimes I don’t need artificial light, but if I’m hiking through a forest, or the moon goes behind clouds or a mountain, too much light is better than not enough. I carry a small (but bright) flashlight and headlamp. I don the headlamp when it gets too dark to view the controls on my camera or locate items in my bag. The flashlight is for the walk back to the car, which when combined with the headlamp, allows me to view the ground at my feet and the trail ahead.
See more of Gary Hart’s work and learn how to enroll in one of his workshops at www.eloquentimages.com.

Monday, October 15, 2018

DIY – High Speed Photography at Home

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high_speed_photography_glass
How to take photos like the one you are seeing here. It’s a glass of Champaign, being shot with a BB gun. You can use this technique to take picture of exploding things like tomatoes, watter balloons, watermelons, or even you Canon camera as you smash it against a wall for not understanding the menus (Sorry, could not resist…)
Freezing fast motion (AKA High Speed Photography), can give some pretty special photographic effects. High Speed Photography is used in physics, health research, sports and more. This guide describes how to capture super fast movements using ordinary camera gear and a little home made electronics. I will describes the setup I used the problems I encountered and what I did to solve or work around them.
Here is a nice example of High Speed Photography:
Capturing a balloon just as it punctures
high_speed_photography_balloon
Nuking an apple
high speed photography apple
Capturing such images introduces a lot of challenges. How does one handle timing with exposures times
faster than 1/6000 second!?
We have to handle shutter lag, synchronize the flash and time the exposure to just the right moment.
But the shutter lag of any normal camera is so long that it will be all most impossible to time the exposures. And how do you synchronize the flash with an exposure time of less than 1/6000 second?
To work around the problems with shutter lag and flash synchronization, the exposure is done in a completely dark room. This way the shutter can opened without actually getting an exposure. The exposure time set on the camera just has to be long enough for the action to happen while the shutter is still open. Because the room is dark, the long exposure time will not have any effect on the final output (this is because no light enters the lens to hit the sensor / film)
To actually get an “exposure”, a flash is fired. The flash light duration will now become the actual
exposure time.
SO now we need to see how long does it takes the flash to fire. It turns out that the output power of the flash, actually affects the duration of the light, so to get exposure times. If you need exposure faster than 1/6000 seconds, the output needs to be reduced. For more information on the light duration please see the test I ran on my Sigma EF-500 flash.
Now we only need to synchronize the flash with the action we want to capture.
This can be done in several ways. For example synchronizing with a balloon puncture, can be done via sound. Impact-actions, like a BB Soft air gun pellets, can be triggered with a mechanical switch, like in the picture below. When the pellet hits the cd-cover it’s pushed on to the switch, which then triggers the flash.
high_speed_photography_impact
Here is my High Speed Photography setup and work flow (Balloon Shot).
The Gear:
  • Balloon (OK – we are going to nuke this one, so don’t use your favorite)
  • Digicam
  • Tripod
  • Sigma Flash
  • Home made sound trigger (more info). If you do not have an optical slave you can use the Universal Sound Slave Circuit
  • Needle (or BB-gun, see below)
  • Backdrop (I use a black Bristol sheet)
The Setup
First step is to set-up the scene. The black Bristol sheet is used as backdrop. The balloon, flash, microphone
and camera are placed like in to image below
high_speed_photography_setup.gif
Gear settings:
  • Flash: optical slave and 1/16 output power.
  • Camera: Exposure time: 1-2 sec. ISO 100-200 Aperture F 11-16 manual focus.
  • Microphone: The distance between the balloon and microphone, is used for synchronization. 50-70cm is good for balloon punctures 🙂
Next step is framing and focusing:
While trying to stay within the best performance on the lens, I either zoom or move the tripod, until I have the desired framing. Focus can be obtained either automatic or manual, but do remember to switch to manual to lock focus, otherwise the camera will try to focus when the lights are switched off.
Now it’s time to test the setup and lightning. All lights are switched off and the shutter is set to bulb.
To fire the flash I just clap my hands. Then I review the image on the camera, checking for exposure, framing, focus and DOF.
To get the correct amount of light / exposure, one can Increase or decrease:
– the strobe distance to the balloon
– the output power of the flash
– the aperture on the camera
– ISO sensitivity on the camera
Taking the shot (pan intended :))
The test is repeated until satisfactory result have been reached, and the real photo can be taken. This is done the same way as when testing, but instead of clapping, the balloon is punctured with a needle.
One could also just fill the balloon with water and shoot it with a BB Soft air gun 🙂
high_speed_photography_bb-gun
This article was contributed by Karsten Stroemvig (aka Lullaby), see his other great high speed photograph projects

Sunday, October 14, 2018

http://app.autoaffiliatemachine.com/pro/pdf/PhotographyJobs1539496451.pdf

How To: Photograph During Bright Midday Sun

Turn a lighting faux pas into an element that adds punch to your photo.
Midday Sun Photography
Midday Sun Photography
For this stitched composite, Brown positioned his strobes to make the sun seem to be the main light, even though it’s clearly backlighting the scene.
Patrick Cavan Brown
To add punch and power to this stitched, panoramic portrait of a small-town Texas police squad, Patrick Cavan Brown committed what is generally considered a lighting faux pas: He shot with the bright midday sun high and almost dead-center.
 
“I loved the way it looked and was determined to build my photograph around it,” explains the Asheville, NC-based pro photographer. “Not only is the sun beautiful, but it adds spectacular depth.”
Okay, we thought, but what about the deadly problems caused by shooting directly into the sun, such as washedout and desaturated color, missing-in-action subject detail, and comet-shaped lens aberrations? Brown has the right techniques—and equipment—to overcome those pitfalls:
Balancing sun- and strobe light.
“I knew when I saw the shadows created by full sunlight, that if I wanted to fill them in with my Canon Speedlites, the strobes would need to be powerful, plentiful, and close,” says Brown.
He used the four Speedlites direct and undiffused at or near their maximum power settings, so their specular effect would mimic sunlight. Their output was bright enough that the photographer could underexpose the scene by 2 stops, adding weight to the sky and shadows.
Controlling flare with careful lens selection.
Aiming a lens directly into the sun creates image-degrading flare that essentially fogs the sensor, eroding sharpness and detail. It can also cause comatic aberration (coma)—a comet-shaped flaring along the image edges. Because of their design and special coatings, some lenses are better at controlling flare and coma.
Brown started with a Canon 24–70mm f/2.8L lens for the four vertical images that went into this panorama. “That lens handled flare terribly, though, so I switched to my much older Canon 17–35mm f/2.8L, which proved far superior,” he recalls.

Polarizing to boost color and sharpness.
“The circular polarizing filter helped me shoot into the sun by darkening and maintaining color in the sky and detail in the clouds,” he says. “But it also acted as a neutraldensity filter, cutting light transmission through to the image sensor by 2 full stops.”
The dimming effect helped Brown capture a sharper photo, too. The reason? Instead of shooting at or near the minimum aperture on his lens, which introduces softness due to diffraction, he could set f/11—the sharpest aperture on his lens.
The diminished light transmission also let the photographer crank up his Speedlites to their maximum output without blowing out highlights, making it easier for him to balance strobe and bright sunlight.
To see Brown’s behind-the-scenes, time-lapse photography of this and other shoots, visit patrickcavanbrown.com.
Midday Sun Photography
Midday Sun Photography
For this stitched composite, Brown positioned his strobes to make the sun seem to be the main light, even though it’s clearly backlighting the scene.
Patrick Cavan Brown
1 of 4
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3 of 4
how-to-lighting-march.jpg
How Patrick Cavan Brown Lit The Scene
After mounting his Canon EOS 5D (A) vertically on a Manfrotto 3415 tripod head and ancient gitzo tripod, Brown placed four Canon 580EX II Speedlites (B) on lightstands at various heights and distances around his subjects. He fired the camera and flashes wirelessly using a cable release and Canon’s infrared Speedlite ST-E2 transmitter. The final image, which he tweaked in adobe Lightroom, was made of four exposures, which he stitched into a single panorama in Adobe Photoshop. Between each of the four exposures, he moved some of the lights to best balance highlight and shadow detail.
Kris Holland/Mafic Studios (illustration)



How To Use Histograms

For precise exposures that best capture a scene’s dynamic range, ignore what the image preview looks like and rely on the histogram
how to use histograms to improve your exposures As photographers, we rely so much on our eyes that it’s almost second nature to decide whether a picture is too bright, too dark or just right simply by the way the LCD preview image looks. But from leading photo workshops for more than a dozen years, I’ve learned that the single biggest cause of exposure mistakes is making decisions based on the way the picture looks on the camera’s LCD.
The image preview your camera displays is great for checking composition, but the brightness of the image varies both with the LCD’s brightness setting and with the always-changing ambient light. Compounding the problem, the picture you see is a JPEG that doesn’t display the full range of tones captured. A much more reliable way to determine exposure is to use the histogram your camera creates with every click.

Histograms Explained

A histogram is a graph of the tones in an image. Its simplest form, the monochrome version virtually all digital cameras display, is the luminance (or luminosity) histogram. Understanding the luminance histogram will improve your photography and make reading the (slightly) more complex RGB (red, green, blue) histogram much easier.
For some, any graph has the potential to evoke flashbacks to the trauma of high school science class. But a histogram is quite simple—simple enough to be interpreted in the blink of an eye.
When an image is captured by a digital sensor, your camera’s processor creates a JPEG preview image for display on the camera’s LCD. As it creates the preview, the camera samples the brightness of each photosite and assigns it a tone (brightness) value ranging from 0 (absolute black) to 255 (absolute white). Every tone value from 1 through 254 contains detail—the higher the number, the brighter the tone.

A simple histogram to help you learn how to use histograms
Luminance histogram.
Armed with the tone values for each photosite, the camera builds the image’s histogram. The horizontal (X) axis of the histogram has 256 discrete columns (0-255), one for each possible brightness value, with the 0/black column on the far left and the 255/white column on the far right. (They don’t display as discrete columns because they’re crammed so close together.)
Your camera builds a new histogram for each image, adding each photosite’s brightness value to its corresponding column on the histogram, like stacking poker chips. The more photosites of a particular brightness value, the higher its corresponding column will spike.

Reading A Histogram

Not only does the range of tones visible in the LCD preview vary with ambient light and screen brightness, even in ideal conditions, more information is captured by the sensor than the LCD preview can show. And though the camera uses the same preview JPEG to build its histogram, the histogram provides a more consistent, precise source of exposure information that can be relied on regardless of external factors.
There’s no such thing as a “perfect” histogram shape. The histogram’s shape is determined by the distribution of light in the scene, while the histogram’s left/right position is a function of the amount of exposure given the image. The histogram’s height is irrelevant—information that appears cut off at the top of the histogram just means the display isn’t tall enough to fit all the photosites possessing that tone.
The amount of exposure you give an image is a creative choice, but as a general rule photographers try to avoid clipping (cutting off) the histogram’s graph on the left and right. A histogram clipped on the left means some of the scene’s detail is pure black; a histogram clipped on the right means some of the scene’s highlight detail is pure white.

How to use histograms to evaluate metering.
An evenly-distributed histogram. I metered this El Capitan reflection to capture the tones similar to what my eyes saw.
How to use histograms to intentionally overexpose.
An intentionally overexposed histogram. I overexposed this backlit poppy to turn the blue sky into a white background.
How to use histograms to intentionally underexpose an image.
An intentionally underexposed histogram. I underexposed this image of a rising crescent moon to turn El Capitan and Half Dome in to silhouettes.

Managing A Histogram

In a perfect world, when you see your histogram clipped on the left, you simply increase the exposure to shift the histogram right (brighter) until no shadow data is clipped. And if you see your histogram is clipped on the right, you decrease the exposure to shift the histogram left (darker) until no highlight detail is clipped. Problem solved.
Many scenes contain too broad a range of light, from the darkest shadows to the brightest highlights, for the camera’s sensor to record. In these scenes, you can blend multiple exposures that cover the entire range of tones or apply a graduated neutral density filter to darken the brightest areas of the scene.
When blending exposures or using GND filters isn’t practical or available, I usually underexpose to sacrifice (clip) the shadows and save the highlights. Not only are clipped shadows easier to recover in processing (albeit with some noise) than clipped highlights, but also the human eye is generally drawn to the brightest things in an image, so lost highlight detail is much more damaging to an image.
When metering high-dynamic-range scenes, remember that the histogram is built from the preview JPEG, so a RAW image actually contains more image data than the histogram shows. Because the amount of recoverable RAW detail varies with the camera, it’s important to know how much you can clip your camera’s shadows and highlights and recover them later. On the other hand, JPEG shooters have a much smaller margin of error and need to be more conservative with their clipped shadows and highlights.
While the general goal is to ensure that none of the tone data is cut off on the left or right side of the histogram, the exposure you choose for a scene is ultimately a creative choice. Though I often expose my scenes to match the amount of light my eyes see, sometimes I decide to make the scene darker or brighter than what I see.
Experienced photographers who are comfortable reading and managing a histogram will often expose their images so the histogram is as far as possible to the right without clipping, then reduce the brightness later in Lightroom or Photoshop. This “expose to the right” technique is a valid approach that yields more image data and less noise, but it must be done with care because the margin of error is much smaller on the highlights side of the histogram—even a small misjudgment can result in unrecoverable highlights and a ruined image.

The RGB Histogram

While the luminance histogram tells you about the detail you captured, the RGB (red, green, blue) histogram shows the color you captured.
To capture color, each photosite on a digital sensor measures the intensity of the light in one of three colors: red, green and blue. The camera uses this color information, and the color information from adjacent photosites, to interpolate the actual color for that location on the sensor. It also uses the color brightness to assemble individual red, green and blue histograms. Combined, they form the RGB histogram, displayed as three separate graphs or all three colors overlaid on a single graph.
If you’ve ever wondered why a sunset or blue sky appears washed out when the luminance histogram looked fine, the answer is probably in the RGB histogram. Even when one or two color channels are clipped, the luminance histogram can still look fine, creating a false sense of security. Photographers who use the “expose to the right” technique and rely on the luminance histogram without checking the RGB histogram are especially at risk of clipping colors.

how to use histograms with all three RGB channels
RGB histogram. The green and blue channels are similar, but the red channel clearly shows the Grand Canyon's red rocks.
Most scenes have a fairly even color distribution (all three channels have a similar histogram), but if you’re photographing a scene with one vivid color, such as a sunset or a backlit flower, you may find one color channel skewed far to the right. Even if just one channel is clipped, the only solution is to adjust the exposure for the entire scene.

A Picture Is Worth A Thousand Words

The two Horseshoe Bend sunstar images here are from the same file. The first is the way the image looked on my camera’s LCD, along with its histogram; the second image is the same picture after just a few minutes of adjusting highlights, shadows and curves in Lightroom and Photoshop—no plugins, blending or other elaborate processing.

horseshoe bend example of how to use histograms
Horseshoe Bend — how the image looked on my camera’s LCD, along with its histogram.
If I had given the exposure enough light for the shadows to look good (closer to how my eyes saw them) on my LCD, the highlights would have been hopelessly overexposed. Similarly, if I had darkened my highlights enough to look good on my LCD, the shadows would have darkened to an unrecoverable and/or noisy black. I knew my best chance for capturing this high-dynamic-range scene with a single click was to ignore my LCD preview and trust the histogram.

how to use histograms to achieve this beautiful exposure
Horseshoe Bend image after processing, using the histogram as my guide.
Despite an image that didn’t look good at all on my LCD, the histogram on my Sony a7R II showed me that I’d captured virtually all of the scene’s shadows and highlights. And because I captured this image in RAW mode, careful positioning of the histogram kept both shadow and highlight clipping minimal and in the recoverable range. Ignoring my preview and trusting my histogram allowed me to achieve the final image you see here with very little processing.

Classic Fall Color Photo Tips

Try these fall color photo tips that pros rely on to capture your own beautiful images of the stunning displays of autumn foliage
Fall Color Photo Tips: Burgess Cemetery in Grafton, Vermont
One of my favorite spots in the whole world is the Burgess Cemetery in Grafton, Vermont. With the winding road and fall color, this photo just shouts autumn. Nikon D3X, AF-S NIKKOR 24-70mm F2.8G ED.
The fall season always fascinates me. As a professional photographer, I use my home base of New England and the ability to make short trips at “peak” times to capture the colors. With this flexibility, I can stay at one place or move about the half-dozen states that are renown for this yearly display of Mother Nature. In this article, I'll share with you the essential fall color photo tips that will put you on the path to making your own beautiful images of the season.
When you arrive at your destination, chances are you’ll be overwhelmed by what you see in front of you. Many photographers will argue that the first light is the best of the day. My take here is to stay out all day—the autumn season has more than enough color for me to photograph, especially on a bright fall day, and as the sun moves, the opportunities in the landscape keep changing from sunrise to sunset. You can experiment with side-lighting or backlighting for some impressive results. Out west, the aspens absolutely light up with this type of illumination. In my part of the country, New England, the red maples combined with darker pines always are worth a second look. We get days with brilliant blue skies accented with large, cumulus clouds.

Fall color photo tips: Above and overlooking Middletown, Vermont.
Above and overlooking Middletown, Vermont. Nikon D3X, AF-S VR Zoom-NIKKOR 70-200mm f/2.8G IF-ED.

Take Advantage Of Nature’s Soft Box

An overcast day is the best lighting you can have for fall color photography. Mother Nature provides us with a giant diffuser to soften the light while at the same time allowing the colors to come through with a soft saturation not possible with bright sunlight. Colors pop at any angle without the annoying shadows. I like the depth of color on an overcast day, and welcome the occasion to go outside and look for patches of patterns in the trees and the groundcover. To add to the mix, a light drizzle can boost the saturation, and with a polarizer you can get rid of distracting reflections. When shooting on a cloudy, overcast day, try to leave the sky out of the photo by composing tightly on the subject. With no color to speak of, a gray sky is seldom an asset to a radiant color photograph.

Think About More Than Just The Colors

Fall is a good time to set your goal on a project, self-assignment or a favored location. Having published a book on the season, I am always on the hunt for new locations to add to this tome. Waterfalls and rolling streams are prime targets, especially on overcast days. Use a good, sturdy tripod and a cable release, and employ the slowest shutter speed you can, stopping the lens down to ƒ/16 or ƒ/22. On a sunny day, I use a Singh-Ray Vari-ND filter that dials in any density up to eight stops of light to allow longer shutter speeds that blur the motion of the falls. On a dreary day, I often don’t even need the Vari-ND filter. I simply set my camera’s ISO to 50 or 100 and use a polarizer to control the light coming into the camera.

In the fall, my wife and I take long weekends at local B&Bs here in New England. After checking in, we went on a hike and found this delightful setting around a small brook covered with leaves. The day had a perfect overcast and an exposure of 4 sec. at ƒ/9.5 with a polarizer beautifully captured the motion of the water.

Equipment & Lens Choices For Fall Color

For capturing a vast expanse of color, wide-angle lenses are a natural. A 24-70mm is perfect for the job. For shooting up and into the trees, wider lenses offer a unique perspective, and for shooting down to include both the groundcover and trees, they’re ideal for scenes where you want sharpness to extend from inches to infinity. With a wide angle, I can draw attention to a colorful palette in the foreground, or I can place something else in the foreground and make use of the vibrant colors in the background.
Telephoto lenses, on the other hand, can help isolate parts of a colorful forest into interesting shapes and colors, thanks to the depth-flattening effect of the longer focal length. Again, use a sturdy tripod and a cable release, and, if you’re shooting with a DSLR, use live mode to raise the mirror before the shutter goes off for blur-free photographs. Telephoto zooms offer the convenience of staying in one place while you play with composing the forms, patterns and colors in front of you. However, don’t let this versatility lead to complacency; make sure you move around and look for new perspectives.
I always take along a true macro lens, as lulls in the day’s shooting can be heightened by stretching out the legs of the tripod, getting down and dirty on the ground and exploring for fallen leaves, acorns or patterns formed by a combination of both. Or you can use close-up attachments for occasions when the added weight of a dedicated macro lens may not be desirable. I use a Canon close-up attachment with a 77mm diameter on my Nikon 70-200mm lens to make a useful zoom macro. For dedicated macro work, I like to use a right-angle finder, or, if your camera has one, a swiveling LCD is incredibly convenient.

Taken on a side road in Vermont. To me, white trees are always interesting with fall foliage. Moving my Nikon D3X slowly in a vertical plane, I used a 3-second exposure at ƒ/29 to create the blur effect. Photos like this take multiple tries, and this one was the best of 14 attempts. Printed on a textured paper, it has the feeling of a fine watercolor or oil painting.

Use Lighting To Boost Color

When the available light isn’t ideal, today’s TTL flashes are easy and accurate to use. I like to cut back the power to add just a bit of fill without overpowering the scene. I find that if I dial back about a 2⁄3-stop on the flash, the subject gains a feeling of luminance without being overpowering. Lightweight LED panels are also incredibly useful because you can see the effect as you shoot.
Another solution is to carry a handheld reflector that folds to a compact size to fit easily into your camera bag. Additionally, consider a visit to your local glass shop, where you can often purchase “scrap” mirrors, and, for a few dollars more, they may polish the edges and round the corners for you. These can be used as reflectors to add light to a scene.

In the Green Mountains of Vermont, streams are abundant, with this one being a prime example, begging for photography. An overcast day and a 2.5-second exposure at ƒ/11 yielded this pleasant photo. Nikon D3X, AF-S NIKKOR 24-70mm F2.8G ED.

Use A Tripod, But Don’t Get Stuck

Purchase the best tripod you can afford and be aware that long center columns that make for unsteady support if the wind comes up. There are plenty of excellent models that are lightweight and sturdy and for trekking. I am using a Gitzo GT2542L with an Acratech quick-release ballhead that allows precise adjustments with one knob (as opposed to three on other tripod heads).
When I’m photographing a colorful fall scene, I like to mount the camera last, not first. I move around looking through the viewfinder, often changing lenses to find the right composition. Then I pull out the tripod and get everything locked down. Attaching the camera first just plants the initial idea into your head that this is the only place to be. Keeping an open mind before settling down is important. After getting a shot you like, remove the camera from the tripod and keep looking, repeating the process. A great fall color scene seldom has only one photo opportunity.

Be Familiar With Your Equipment

Out in the field, I see more and more photographers with the latest high-tech cameras. This is great, as long as you are familiar with the workings of your new gear before you leave. Especially when on a workshop or cross-country trip with a short season, bring and use the tools that you are most familiar with, plugging in the newer gear as time permits. You will find yourself less stressed and get better images. You can thank me later!


Intuitive B&W Conversions

Try this simple step-by-step process for making beautiful monochrome images

A local gaucho with his horse, who happened upon the 2010 Wenger Patagonian Expedition Race and stopped to check out the action on the island of Tierra del Fuego in southern Chile.


1 ) The image as it was worked up in Lightroom 3, with the black-and-white settings dialed in via the Black&White and Basic dialogs in the Develop module.
Black-and-white photography seems to be more popular than ever in this digital era. And in my opinion, it has never been easier to make a professional-caliber black-and-white conversion, especially with the new, easy-to-use tools. I happen to use Adobe Photoshop Lightroom, and in this article, I’ll show you my step-by-step process with it.
Lightroom has a before and after mode that, along with the individual Black&White Mix sliders, allows you to see which colors each Black&White slider correlates to, giving specific control of each color channel and the resulting gray-scale toning of that color. To convert an image to black-and-white, click on the Black&White option at the top of the right Develop module in the Basic dialog box. Once you select Black&White, the Black&White Mixer dialog appears in the HSL/Color/B&W section, third down from the top. The Mixer shows up with Auto adjustments already made, but you can adjust the sliders individually to dial in the image. To access the before and after mode, click on the “X|Y” icon in the toolbar, which is the second icon from the left.

2 ) Before and after mode in the Develop module. This is just one of the four ways you can set up the before and after mode, which is a fantastic feature for converting images to black-and-white.
Also, don’t forget that you can adjust your exposure, curves, contrast and the amount of vignetting in the other dialog panels. In addition, the Targeted Adjustment tool allows you to adjust the tones directly on the image itself by clicking on that section and moving your mouse up or down. Just click on the icon consisting of concentric circles (it looks like a small target) located in the upper-left corner of the Black&White panel to grab the Targeted Adjustment tool. It’s a super-slick method for working directly on the image and one of the incredibly intuitive features in Lightroom. As you move your mouse up or down, the sliders also will move in the Black&White panel, as well.
To start off, I normally create a Virtual Copy of my image before converting to black-and-white so that I have both a color and a grayscale version of the image. Having both a color and black-and-white version helps me to see if the image works better in color or in black-and-white. Normally, I won’t know until I do the conversion and look at them both, side by side.

3 ) Before and after mode zoomed into the gaucho’s face to fine-tune the black-and-white conversion. To maximize detail and contrast on his face, Clark used the Clarity slider and localized adjustments.
For an example, let’s look at this image of a gaucho photographed during the 2010 Wenger Patagonian Expedition Race in southern Chile. Because it was overcast and stormy for much of the race, many of the images from that assignment lent themselves to black-and-white. In this image, the sky was pretty much blown out before I got started, so in black-and-white, I just let it go and cranked up the contrast. As usual, I used the before and after mode to adjust the Black&White sliders. For this image, there were a large variety of colors and hues that allowed me to accurately convert the image as I wanted it to look in black-and-white. And using the multiple views available in the before and after mode, I could concentrate on key parts of the image.

4 ) Clark finished the image in Photoshop by doing a bit of retouching on the hat and face, as well as adding some brightness and contrast and adjusting the Levels.
In my workflow, with both color and black-and-white images, I find that to effectively finalize an image I need to continue the postproduction in Adobe Photoshop once I export images out of Lightroom. I export images from Lightroom as 16-bit ProPhoto RGB color files at 300 ppi. Then in Photoshop, I can convert the files to grayscale, set the black and the white points in the image, make the final Levels adjustments and perfect the contrast with either the Curves dialog or with the Brightness/Contrast tool. And if an image needs it, I can extend the exposure latitude by masking and compositing different pieces of the image together. For this image of Francisco, all the image needed in Photoshop was a Levels adjustment, some precise cloning on the hat and a brightness/contrast adjustment.
Most images will be improved if there’s a part of the image that’s pure white and another part that has some pure black. Many of the images I choose to convert to black-and-white are images that in color have little contrast. Perhaps they were shot in the fog or on an overcast day. In either case, converting them to black-and-white allows me to really crank up the contrast and fashion the image in a way that may look a little strange in color, but works well in black-and-white.
Adventure-sports photographer Michael Clark is based in Santa Fe, N.M. This article is an excerpt from his comprehensive digital workflow e-book Adobe Photoshop Lightroom: A Professional Photographer’s Workflow, available at www.michaelclarkphoto.com.

Friday, October 12, 2018

5 Black and White Photography Tips

Black-And-White-Photography-TipsContinuing the Black and White Photography theme we’ve been on lately in the latest forum assignment (where the photos featured in this post were submitted) I thought I’d share five pretty random Black and White Photography Tips.

Black and White Photography Tips

1. Shoot in RAW

I know many readers of DPS can’t shoot in RAW (because their camera doesn’t offer it) or don’t shoot in RAW (because they either don’t know how or don’t like to) but for the most control in the post production phase of converting your color images into black and white ones – you’ll want to shoot in RAW if your camera does allow it. Of course shooting in JPEG doesn’t stop you shooting in black and white – but if it’s an option, give RAW a go, you might be surprised by what it offers you in post production. More on RAW vs JPEG here.

2. Shoot in Color

If your camera doesn’t allow you to shoot in RAW (or you choose not to) – shoot in color and do your conversion to black and white later on your computer.
While most digital cameras offer you the option to shoot in Black and White (and can produce some reasonable results) you have more control over your end results if you have the color data to work with in your conversion on your computer. (read more on the choice between shooting in black and white or post production conversion).
Update: There is an exception to shooting in Color and it’s when you’re taking note of point 1 above (shooting in RAW). When shooting in RAW and switching to Black and White mode you see your results in the LCD in black and white but the camera actually records all of the information (including color) – the best of both worlds. But if you’re shooting in JPEG – shoot in color and do the conversion later. Thanks to Joost (in comments) for the reminder to include this.

3. Low ISO

Shoot with the lowest possible ISO possible. While this is something that most of us do in color photography it is particularly important when it comes to black and white where noise created by ISO can become even more obvious. If you’re after this ‘noise’ (or grain) you can always add it later in your post production – but it’s harder to go the other way and take noise out.
Black-White-Digital-1

4. When to Shoot

Many digital photographers actually prefer to shoot images for Black and White in low contrast situations. So an dark or overcast day can be a great time to shoot out door shots.
Ironically these are the days that those who shoot only in color sit at home complaining about the ‘poor light’. So next time you find yourself with a dark and gloomy day – shoot some black and white shots.




5. Composition

Most of the general tips on how to compose or frame a good shot apply just as well to black and white photography as they do when shooting in color – however the main obvious difference is that you’re unable to use color to lead the eye into or around your shot. This means you need to train yourself to look at shapes, tones and textures in your frame as points of interest. Pay particularly attention to shadows and highlights which will become a feature of your shot.
Read more on Black and White Photography at Key Ingredients for Black and White Photography.
UPDATE: Learn more about Black and White Photography with our new Essential Guide to Black and White Photography.




Thursday, October 11, 2018

How To Photograph Moving Vehicles

Capturing that perfect motion shot.
How-To-Photograph-Moving-Vehicles
How-To-Photograph-Moving-Vehicles
To find the right amount of motion blur, Miralle played with exposures. He started at 1/60 sec, and worked his way down to 1/10 sec before settling on 1/15 sec at f/13 (ISO 50). He also bracketed each frame by 0.67 EV. A neat trick: He chose a bike with a shiny gas tank to bounce fill light up onto the rider’s face.
Donald Miralle

When the German magazine Stern approached Donald Miralle (www.donaldmiralle.com) to shoot a new line of Harley-Davidson motorcycles, the Carlsbad, CA-based commercial and editorial photographer was thrilled. Then it hit him: "I'd had very little experience shooting moving vehicles!"



It helped, though, that Miralle had a particular image in mind-the one shown here. "My aim was to find an angle on this subject that no one had yet documented," he says. "While I may not have entirely succeeded, I feel I did place my own perspective and spin on it."
Capturing that image required some very specialized gear. Miralle attached his camera to the Harley using a redundantly secured set of clamps and brackets from Manfrotto. Riding just ahead, in the back of a fiatbed pickup, he tripped the shutter using a pair of PocketWizard Plus II Transceivers ($170, street).
If you try this, start slow. Even motorcycle speeds of 5-10 mph can produce thrilling motion blur. And they're safer.
Two Manfrotto Magic Arms ($110, street) and three Super Clamps ($27, street, shown here) held his Canon EOS-1Ds and 15mm fisheye lens on the bike.
Step 1 Get The Right Gear: A full-frame camera (Miralle used a Canon EOS-1Ds Mark II) captures a wider view than APS-C-sized sensors. To get full views of both the bike and the background, Miralle chose a 15mm f/2.8 Canon EF fisheye lens.
Step 2 Scout Locations: Shady sites will allow the slower shutter speeds you need to record motion blur. "Here, I liked the way the trees and blips of sky created a visual texture," says Miralle. "A plain blue sky wouldn't have conveyed speed or motion." For sharpness, seek out smooth roads.
Step 3 Secure And Stabilize The Camera: Miralle attached two Manfrotto Super Clamps to the bike's front fender rail. Then he used two Manfrotto Magic Arms extended from the Super Clamps, attaching one to the base of the camera and the other, with another Super Clamp, to a metal stud in the hot-shoe. Finally, he secured everything possible using safety cables that he'd attached to the bike.

Step 4 Play With Shutter Speeds: You need a long shutter speed for beautiful motion blur. But set it too long and you risk a blurry biker. Best: 1/10 to 1/30 sec.
Final Step Shoot Like Crazy: The cool part about this assignment? Miralle only needed one good shot. The uncool part? It took hundreds of pictures and two days to get it.



How to Create the Misty Water Effect in Photography

Have you looked at a landscape photographer’s photo and wondered how they got the water coming down from a waterfall to look so misty? Or how they got the ocean in a seascape photograph to look so smooth?
waterfall long exposure
photo by AirHaake
My guess is that if you’re starting out in landscape photography it’s probably one of the first things you’ve tried to do. If you got it right the first time, that’s great. If you didn’t, then let me show you just how easy it can be to create the misty water effect.
There is every chance that if you are just starting out that you won’t have purchased yourself any filters yet. Filters will make it easier for you to create the misty water effect, but they aren’t essential; it just means you’ll have to get up a little earlier in the morning and stay out a little later in the evening.
The first thing you’re going to need to do is to get up early in the morning to get your misty water shot. It’ss pretty much impossible to get the misty water effect during full daylight conditions unless you have the new breed of neutral density filters that are extremely dark. Even then I wouldn’t recommend shooting during full daylight, as you just aren’t getting the best available light. You should be ready to start shooting your subject at least 30 minutes prior to sunrise or 30 minutes after sunset. You will also need to have your camera mounted on a tripod, as you’ll need to keep your shutter open for quite a few seconds to create the effect.
Once you’re ready to go, it’s probably easiest to set your camera on aperture priority mode and use the lowest ISO setting that you possibly can. Set your aperture to a setting around f/16. It goes without saying that your next step should be to focus on your chosen subject to make sure your photo will be as sharp as possible. You should also consider getting a remote shutter release and using mirror lockup to make sure that your camera doesn’t shake. Now for the fun part; take the photo! If your shutter is open long enough, you’ll see that you too have created the misty water effect that you have been after. How hard was that?
ocean long exposure
photo by Nigel Howe
If you decide that landscape or seascape photography is something that you definitely want to continue doing, then you should at some stage consider purchasing a few neutral density filters—the darker the better. The darker a neutral density filter the longer you can shoot your subjects after the sun has risen or the earlier you can take a photo before the sun sets.
waterfall photography
photo by Giuseppe Milo
Over the years, I have found that the best shutter speed for creating the misty water effect is anywhere between 1 to 4 seconds. Anything less than this and the water doesn’t have that silky smooth look, and anything more than that flattens the water almost entirely and makes it look almost boring. Of course, every scene is different. You may need to hold your shutter open longer or shorter depending on what you’re trying to achieve. Now for my last tip: make sure that you focus on your subject before putting on your neutral density filter, otherwise it’s almost impossible to focus.
About the Author
Landscape and seascape photographer Jamie Paterson is based in Australia. He is always trying to capture those elusive perfect moments that nature shares with us and loves to share his knowledge to enhance others’ photographic abilities.

http://www.photography-jobs.net/?hop=darryl54