Fujifilm X-T3: Taking Fujifilm Underwater

How will Fujifilm's highest resolution APS-C camera, the X-T3, perform underwater?
By Nirupam Nigam

Underwater photography does not take well to underdog manufactures. This is entirely because underwater photographers require a massive support system with significantly more equipment required in the baseline toolkit. It’s easy to name the big players in underwater photography – Nikon, Canon, Sony, Olympus, and Panasonic (in that order). We often forget that there’s more out there. In fact, some of the legends of the film days still exist. One of these that appears on the radar intermittently is Fujifilm. And Fujifilm might just be putting its first toe in the underwater world with the X-T3. 

Before the release of the Fujilm X-T3, the specs on the X-T2, lens selection, and housing options just didn’t quite make it a viable option for underwater photographers. The X-T3? Well, the specs improved and Fuji X mount lenses have improved. It now even surpasses similarly priced cameras in many aspects. Will it be a popular camera for underwater photography? Probably not. But for those who love Fuji’s retro design, high quality APS-C glass, and film-style JPEG rendering – this could be a very unique camera to take underwater. 


Underwater accessories for the Fujifilm X-T3 are available now at Bluewater Photo!

The Ikelite Fujifilm X-T4 underwater housing is now available a Bluewater Photo!






Jump to a Section


Quick Specs   |   Pros for UW Photography   |   Cons for UW Photography


Underwater Lenses   |   Underwater Housings   |   Conclusions





Quick specs:

26.1 MP BSI X-Trans CMOS 4 sensor (APS-C)

425-point hybrid contrast/phase detection autofocus system

Improved AF tracking (from the X-T2)

Dual UHS-II SD card slots

20fps with an electronic shutter; 11fps with a mechanical shutter; 30fps in 1.25X crop mode with an electronic shutter

3.69M-dot EVF (electronic viewfinder)

10 bit internal video capture at 4K/60p (1.18x crop). 4K/30p can be used with full sensor size

F-Log color profile internal video recording

No image stabilization

Native ISO 160-12800

Max sync speed with flash: 1/250 sec

5.2 x 3.7 x 2.3" / 132.5 x 92.8 x 58.8 mm

1.19 lb / 539 g

Retro dials and buttons


Implications for Underwater Photography

Just from the specs sheet, a lot of interesting inferences can be made on how this camera might perform underwater. One thing is for sure – the Fujifilm isn’t your traditional underwater camera and it won’t appeal to traditional underwater photographers. But perhaps, underwater photography has gotten too “traditional”…


26.1 MP X-Trans CMOS 4 Sensor

At 26.1 megapixels, Fujifilm can now boast the highest resolution of any APS-C sensor out there. That’s a big deal. We’re talking excellent potential for post processing macro photos and getting amazing, high quality, 100% crops. With high resolution combined with the crop factor of an APS-C sensor, the X-T3 has the potential to be a macro powerhouse….with the right lens. Another cool thing about the X-Trans sensor is that it is made by Fujifilm. It’s a not-so-well-kept secret that Sony makes the sensors for many other major camera manufacturers. Because Fujifilm tries to replicate the color science and image quality from the bygone days of film, the Fuji-made sensor is one of the reasons that Fuji fans shoot Fuji. 


JPEG Rendering (Film Simulation Mode)

I might catch a little flak for this, but the JPEG rendering by Fuji is excellent. They also have additional settings where they try to replicate film in their JPEGs (film simulation mode). If you’re into film and Fujifilm as a brand, this is a great reason to shoot Fuji and skip the post production process. I’m also curious to see how this might materialize in underwater shots. 


Improved AF Tracking

The autofocus on the X-T3 is 1.5 times faster than the X-T2! Fujifilm is also claiming improved autofocus tracking over the Fujifilm X-T2. Initial reviews seem to indicate this is true. In fact, many are saying the AF tracking on the X-T3 is better than competing brands such as the Sony A6300 and equivalent to the Panasonic G9. The eye AF on the X-T3 is supposed to be especially good.


Electronic Viewfinder 

The specs on the Fujifilm’s X-T3 EVF is impressive – 3.69 million dot resolution, a display lag of 0.005 seconds, and a refresh rate of 100 fps. We hope these specs will also include a dynamic range good enough for underwater photography. By any rate, this could be a very functional EVF.


Ergonomics (Topside)

 Some photographers continue to shoot Fujifilm out of nostalgia. And Fujifilm makes it easy to live in the past with the build of their cameras. They’re retro – even the ISO has a designated dial. This makes them fun to use and a little more involved to control. But underwater? It’s hard to tell if this is a good or bad thing. Certainly, underwater housing companies have no desire to make a retro housing.



26.1 MP X-Trans CMOS 4 Sensor

The highest resolution out there of any APS-C sensor may not be something to boast about. Stuffing so many pixels on such a small sensor introduces the potential for noise issues. As we have not yet taken photos underwater to confirm this, it’s merely speculation. But I would predict that the Fujifilm X-T3 might yield too much noise in low light photos and high ISOs. But if you’re a film buff and shoot Fujifilm because of their history – well this might not be much of a problem.

The sensor is also an APS-C sensor and not a full-frame sensor. With many major manufactures beginning to gravitate to full frame mirrorless systems, Fujifilm will be hard pressed to do so as their line up of lenses is all built for APS-C. 


No Image Stabilization

To me, not having image stabilization underwater is a deal breaker. When shooting in a 3D, low light environment, it’s absolutely necessary to recover as many stops as possible in order to freeze the action. Although the video specs are good, I also think a lack of image stabilization will turn off underwater videographers. 


Available Lenses

The available X mount lenses for underwater photography are also a big turn-off for me. There are currently no fisheye X mount lenses compatible with available housings. I personally think fisheye lenses are an essential part of the toolkit for underwater photographers. However, Nauticam offers nice wet lenses like the WWL-1 to remedy this issue. Recently, there have been some exciting macro options for the X mount lens line up. In addition to the Carl Zeiss Touit 50 mm macro that could be used with the X-T2, there is now a Fujinon 60mm f/2.4, and a Fujinon 80mm macro. 


Post-Processing with RAW Files

Post-processing with RAW files from the Fujifilm X-T3 is actually pretty limited. When processing RAW’s from the T-X3 on Adobe software, wormy artifacts are rumored to appear in the final product. That’s not good. The solution to this is to process with a software like Capture One Pro. Not ideal if you’re an Adobe user.  


Implications for Video

Underwater videography with the Fujifilm X-T3 is bound to yield mixed reviews with videographers. The specs are exciting with the potential to take 4K video at 60p with a 1.18X crop. But to use the full sensor size you’re still only going to get 30 fps. 10-bit internal recording is great, and the F-Log profile will be appreciated by serious video shooters. But the lack of image stabilization kills the video potential that this camera could have had for underwater video. The Panasonic GH5, Sony A6400, Sony A7R III, and Nikon Z7 start to look like better mirrorless options for video. One thing to mention is that Fujifilm offers film simulation mode which introduce film-like picture profiles for both still and video. 


Available Lenses for Underwater Photography

X mount lenses are pretty limited when it comes to underwater photography. However, Fujifilm continues to make new lenses. Here is there roadmap in the near future: 

Wide Angle 

For rectilinear: Fujinon XF10-24mm f/4 R OIS wide angle zoom lens with the Nauticam 180mm Glass Dome Port and Zoom Gear (Nau-36441)

For (Almost) Fisheye: Fujinon XF18mm f/2 with the Nauticam Flat Port 13 and Wet Wide Lens 1 (WWL-1)


Zeiss Touit 50mm f/2.8 macro lens with Nauticam Macro Port 45 + Nauticam Mini Extension Ring 20 + Aperture Ring (Nau-36422) or Nauticam Macro Port 32 + Nauticam Mini Extension Ring 30 + Aperture Ring (Nau-36422)

Fujinon 60mm f/2.4 macro lens with Nauticam Macro Port 45 + Nauticam Mini Extension Ring 20 + Aperture Ring (Nau-36422) or Nauticam Macro Port 32 + Nauticam Mini Extension Ring 30 + Aperture Ring (Nau-36422)


Fujifilm X-T3 Underwater Housing Options

Nauticam Housing for the Fujifilm X-T3

Fortunately, it’s easy to make a choice when it comes to underwater housings for the Fujifilm X-T3. There’s really only one reputable housing manufacture with an available housing and ports - Nauticam. 

Nauticam has made an underwater housing for the third generation Fujifilm X-T3. The housing is milled from a block of solid aluminum, then hard anodized. It’s a rugged and reliable piece of gear that will stand up to saltwater and the can take a beating.  The housing has a depth rating of up to 100m.




The Nauticam X-T3 Housing is available now at Bluewater Photo!



Who Should Take the Fujifilm Underwater?

If you’re a Fujifilm lover and have already invested in the Fujifilm X-T3 or X mount lenses, well you’re in luck because there are viable underwater options! Otherwise, this system caters to a niche type of photographer. If you suffer from nostalgia of the film days and need a digital camera that ergonomically brings you back a few years – this is the system for you. If you’re in the mood of sticking it to the establishment and Sony sensors, then this is also the camera for you. And if, for whatever reason, you want extreme resolution on an APS-C sensor (rather than shooting with a larger sensor), this is definitely the camera for you. More than anything else, its an intriguing camera system. The film simulation picture profiles have a lot of potential for interesting, film-like artwork. If you really end up liking them, then it also cuts out the long process of editing raw files. But your photography certainly wouldn’t be mainstream in the underwater world. And even though I don’t think this camera quite competes with other systems for underwater photography purposes, it’s not to say that the autofocus isn’t excellent and the image quality isn’t great. It’s just a non-traditional underwater system with more limited accessorizing options than other underwater photographic systems. 

 For a long-term investment in underwater photography. I might recommend another manufacture for the availability of lenses, housing manufacturers, and extensive support system. For competing brands, Sony, Panasonic, Nikon, Canon, or Olympus might have more extensive options on the table. But if you’re really a fan of Fujifilm or want to try something different, the Fujifilm X-T3 is certainly not limited to land lubbers. 



Nirupam Nigam is the Editor-in-Chief of the Underwater Photography Guide and the President of Bluewater Photo - the world's top underwater photo & video retailer. While growing up in Los Angeles he fell in love with the ocean and pursued underwater photography in the local Channel Islands. After receiving degrees in Aquatic and Fisheries Science and General Biology, as well as a minor in Arctic Studies, Nirupam worked as a fisheries observer on vessels in the Bering Sea and North Pacific. Since then, Nirupam has been a full time underwater photographer and photo gear head. Check out more of his photography at www.photosfromthesea.com!


The Best Service & Prices on u/w Photo Gear


Visit Bluewater Photo & Video for all your underwater photography and video gear. Click, or call the team at (310) 633-5052 for expert advice!


The Best Pricing, Service & Expert Advice to Book your Dive Trips


Bluewater Travel is your full-service scuba travel agency. Let our expert advisers plan and book your next dive vacation. Run by divers, for divers.