Godox TT685 Thinklite TTL Flash Real-World Review
One of the only things I missed when I moved from Nikon to Fujifilm a
few years ago was the quality of speedlights available for
X-Series cameras. I never truly appreciated how good the Nikon Creative Lighting System was until I couldn’t use it anymore!
This is no longer a problem though: in the last couple of years,
we’ve seen feature-packed speedlights introduced by manufacturers such
as Godox.
In this review, I test out the
Godox TT685F
speedlight flash on my Fujifilm X-Series gear. If you’re not a Fujifilm
shooter, keep reading anyway, as Godox makes a version of the TT685 for
every camera system.

Many
Fujifilm shooters are happy that there’s finally a third-party flash
with both TTL and HSS
(high-speed sync). Fujifilm X-T3 with XF 56mm f1.2
R lens with Godox TT685F on-camera.
1/300s at f/2.2 ISO 200.
Why Godox?
There’s a wide range of third-party flashes available for different
camera systems on the market today. Ten years ago, I would only ever buy
a flash made by my camera manufacturer and would generally avoid any
third-party flash made in China.
How times have changed – the quality and range of features on
third-party flashes these days are outstanding, and prices have fallen
significantly.
I first heard about Godox flashes through word of mouth in Fujifilm
Facebook groups. Godox is based in Shenzen, China, and has been around
since 1993. They make photographic lighting products under their own
Godox brand, and also under other names such as Flashpoint.
Introducing the Godox TT685
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The Godox TT685F
The Godox TT685 is a powerful, feature-packed speedlight at a very attractive price point, around $110USD.
It’s available for all major systems. If you’re looking at buying
one, make sure you grab the right one for your camera. The last letter
in the model number gives it away: TT685F is for Fujiilm,
TT685C is for Canon,
TT685S is for Sony,
TT685O is for Olympus/Panasonic, and
TT685N is for Nikon.
What’s in the box
The flash comes attractively packed in a sturdy cardboard box with
key details of its specifications. Inside the box, you’ll find the
flash, a small black mini stand for attaching the flash to light stands,
a black protective case, and an instruction manual in Chinese and
English. The manual is also available on the Godox website.
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Unboxing the contents of TT5685F
TT685 specs
The specifications of the Godox TT685 are truly impressive. Here’s a summary:
- Runs on 4 x AA batteries. Each set will give you about 230 flashes.
- Recycle time varies between 0.1 and 2.6 seconds.
- It can be used as an on-camera flash, as an on-camera master to
trigger other off-camera flashes, and as a slave flash off-camera.
- The flash head tilts between -7 degrees (slightly backward) to a 90-degree angle.
- The flash head rotates 360 degrees.
- Allows high-speed sync up to 1/1800 second.
- Full TTL (through the lens) mode for Fujifilm X-Series cameras.
- Manual flash can be adjusted from 1/1 to 1/256 power in third-stop increments.
- Runs on a 2.4Ghz radio connection – very impressive given more
expensive flashes in the market run on optical line-of-sight only.
- Capable of firmware updates via a USB port.
Build quality
The build quality of the Godox TT685 is very good. It looks and feels
a lot like my old Nikon speedlights, especially the slightly larger
SB-900. With batteries in, it weighs around 500g, a little on the heavy
side on a mirrorless camera, but not too bad.
The TT685 has a familiar dot matrix LCD screen on the back, which
displays all the settings and information you’ll need when using the
flash. As well as the on/off switch, there’s a middle dial, which is
useful in
manual mode
to dial settings up and down. It also has a number of buttons,
including one for changing the flash mode, one for putting the flash
into slave mode, and another that lights up red. This serves as both the
test flash button and also an indicator that the flash is ready to
fire.

The red button on the bottom left shows the TT685 is ready to fire.
Near the flash head, there’s the standard catch light panel and wide-angle diffuser panel.
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Catchlight panel (top) and wide-angle diffuser panel (over flash head)
Ease of use
Setting the Godox TT685 up is easy. Pop the batteries in and attach
it to your camera by sliding it on the hot shoe with the dot matrix
panel facing you. Rotate the circular lock ring on the base of the flash
until it locks up. You’re ready to go!
It’s easy to move the flash up and down from an upright position to
facing your subject head-on, but I found it a lot more difficult to
rotate the flash 360 degrees. It’s not hard to do; it was just a bit
stiff and felt like it wasn’t meant to rotate at first. I had to check
that it did rotate in the camera manual as I didn’t want to break it.
Using the flash in all modes is pretty easy. It turns off after 90
seconds of idle use, but pressing your camera shutter halfway or
pressing any of the buttons on the flash wakes it up.
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It
was quite dark here, but I’m really happy with the way this image came
out. Fujifilm X-T3 with
XF 56mm f1.2 R lens with Godox TT685F on-camera.
1/600s at f/4 ISO 200.
Three modes
The Godox TT685 has three modes: TTL, Manual and Multi. You can
easily cycle through these by pressing the mode button on the flash.
Having a third-party flash that supports TTL on Fujifilm is wonderful; many other third party speedlights in the past did not.
TTL stands for “through the lens.” This is a way that the flash can
work with the camera to determine the best flash output for any given
scene and, therefore, the best
exposure.

The TT685F mounted on the Fujifilm X-T3.
You can adjust this with the flash exposure compensation feature. This is similar to how you may shoot in full auto mode or
aperture priority mode in your camera (allowing it to make exposure decisions) but then adding
exposure compensation to suit the scene.
The TT685 range of speedlights also supports high-speed sync (HSS) up
to 1/8000s, which is the fastest mechanical shutter speed on many
X-Series cameras, including the
X-T3.
HSS can be very useful in bright conditions outside, especially if
you want to shoot shallow depth of field. Many flashes don’t support
HSS, so their sync speed is typically only 1/200 or 1/250 second, which
can be limiting.
In TTL mode, you can also select
second curtain sync,
where the flash fires at the end during longer exposures instead of at
the start. This can be useful in night scenes to expose traffic trails
or lights in the background while the flash lights up your subject in
the foreground right at the end.
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The
Godox TT685F was fired by the X1T-F wireless trigger for some
off-camera flash. It was
positioned on a lighting stand, firing backward
into an umbrella with a softbox attached.
Fujifilm X-T3,
XF 56mm f1.2 R lens, 1/120s, f/4, ISO 200.
In manual flash mode, you are selecting how powerful the flash fires,
from 1/1 full power to 1/128 power. You can use the dial to move up and
down in 1/3 stop increments. This mode is very useful when you want
more precise control over your lighting. It was also the way flashes
were used for years before TTL.
You
can also use stroboscopic flash in Multi mode. Use it to illuminate a
moving subject against a dark background: each time the flash fires in
rapid succession, the subject is shown moving across the frame.
Although I didn’t test this feature of the TT685, I’m looking forward to trying it out one day.
Using the flash in slave mode for off-camera flash
Off-camera flash
(OCF) is something that beginning to intermediate photographers often
want to learn. The good news is that it’s never been so easy.
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The TT685 in slave mode- note the color of the LCD panel has changed to orange.
Putting a flash in slave mode used to be a nightmare.
I remember being on a Nikon training course in London in 2006 with my
brand new D200 camera and SB800 speedlight. At the first break, the
trainer asked if we had any general Nikon questions. Before he could
finish the sentence, three or four people asked if he could teach us how
to set our speedlight up in slave mode!
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The Godox TT685 in slave mode shown with my Fujifilm X-T3 with the XT1-F wireless trigger
attached.
We all wanted to trigger our flashes
off-camera
by the built-in pop-up flash, but the interface of the flash and user
manual left us all scratching our heads. As he explained the process, we
wrote detailed notes so we wouldn’t forget. It was a question I was
then asked by a number of photographers over the next couple of years,
as it was not easy to work out.
What a contrast we have to the Godox speedlights!
To trigger the TT685 off-camera, you’ll need to use another Godox flash or the Godox X1T wireless trigger.
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My
son illuminated by natural light, backlit by the Godox TT685F in manual
mode (1/64 power)
mounted on a lighting stand. Fujifilm X-T3 with
XF 50-140mm f2.8 R LM OIS WR lens. 1/150s
at f/4 ISO 200.
The X1T is a small, light, wireless trigger made from plastic that
sits on the hotshoe of your camera, triggering Godox flashes set up in
slave mode. Like the flashes, there’s a different version for each
camera system, denoted by a letter at the end of each model.
It’s so easy to use the X1T-F wireless transmitter. The first time I
ever tried it with a smaller Godox flash, the TT350F, I spent about one
minute reading the manual, and within another 30 seconds, I had the
flash set up in slave mode. Voila!
The wireless trigger is excellent – you can fire Godox flashes from
up to 100 meters away, which is quite amazing. In my test, I fired it
from 50 meters away with no problems.

In
this shot, I’m about 50 meters away from my son with my Fujifilm X-T3
and the XF50-140mm
f2.8 R LM OIS WR lens (zoomed all the way in). The
flash fired with no problems!
Usability
Using the flash for basic on-camera/off-camera TTL and manual mode
firing is all pretty straightforward. You can easily cycle between
modes, vary the intensity of the flash in manual mode, change groups and
channels without having to work too much out.
For some of the more advanced functionality of the flash, you’ll
definitely need to read the manual. I’ve played around with it by
randomly pressing some of the other buttons, and I got lost a couple of
times.
Quality
I’m very happy with the quality of the images I’ve taken with the
Godox TT685. It certainly feels like it could compete with the best
flashes on the market quite comfortably. I’m not sure it has the best
recycle time on the market, but other features, such as its use of
wireless technology, make up for it.
Value for money
Around $110 USD, the TT685 is excellent value for money. The range of
features you get with this speedlight, notably high-speed sync, the
ability to use it as an off-camera flash, and the fact it runs on a
wireless signal, are all winners in my book.
Alternatives
Godox makes a range of flashes to suit different needs and budgets. Two alternatives to the TT685 are the
TT350 and the
V860II.
The TT350 is a smaller, lighter flash that runs on two AA batteries.
This was the first Godox flash I bought, and at first, I was impressed
by the small size and good price point. However, over time, it proved
not to be as powerful as bigger flashes, and the recycle times between
flashes seemed quite poor.
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In this shot, I used the
Fujifilm X100F with the Godox X1T-F wireless trigger to fire an off-camera
Godox TT350F speedlight.
The V860II is practically identical, except it runs on a rechargeable
lithium ION battery, allowing faster recycle times. I chose the TT685
due to the cheaper cost, but also because I prefer using multiple sets
of rechargeable AA batteries.
The Godox TT685 is a must-have piece of kit for photographers wishing to use a
flash
on-camera or experiment with off-camera flash. It has an excellent
range of features, good build quality, and has a competitive price
point.
Usability is good too, only with more complex operations will you
need to read the user manual. Turning the TT685 into a slave for
off-camera use is straightforward and done with a press of a button.
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The TT685F mounted on a lighting stand.
Using wireless technology, Godox flashes all talk to each other
seamlessly, and you can trigger flashes in slave mode up to 100 meters
away. This is vastly superior to much more expensive speedlights that
rely on line-of-sight transmission.
If you’ve never used a flash or a speedlight in your photography,
there’s probably never been a better time to throw yourself in the deep
end. I highly recommend the Godox TT685F.
Have you tried out the Godox TT685F flash? If so, share with us your thoughts in the comments.
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