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GFX100S worth it if ONLY planning to use adapted lenses?

  
 
js47
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p.1 #1 · GFX100S worth it if ONLY planning to use adapted lenses?


I used to shoot an X-T3, until I got a Panasonic G9 to use the PL100-400 lens and got addicted to in body image stabilization. I also tried the Sony A7R4 in the meantime and loved the freedom afforded by its megapixels, but the post-shoot workflow with Fuji is just so much better than either Sony or Pana. I still have the X-T3 and about 10 X-mount lenses, but I nearly always reach for the G9 due to its ergonomics, weather sealed lenses, and image stabilization - even if the end results aren't quite as good.

I'd like more resolution and IBIS which led me initially to considering the X-T5. But I want to transition all of my lenses to be WR, meaning I am basically starting from scratch with any system I choose (my only WR lenses for Fuji right now are the 16f1.4 and 90f2, but as I matured as a photographer I increasingly gravitate towards zooms).

However, it has come to my attention that getting set up with an X-T5, 8-16WR, 16-55WRII, and 70-300WR will cost very nearly as much as a GFX100S, Fringer adapter, EF16-35 LIII, EF24-70 LII and EF100-400 LII. I mainly shoot landscape with some architecture so I am not bothered if the autofocus performance is less than flawless.

Also in consideration is a Nikon Z7 with 14-24S, 24-120S, and 100-400S. But it bothers me that they refuse to release a Z7III (I don't want a Z8), the screen is not as good for vertical tripod work, and I am kind of itching to get back into Fujifilm. I've never worked with Nikon raw files but the Fuji files always seem to be pretty close to what I want straight out of the camera. I despise post processing so that is a big plus for me. Of course the main drawback to GFX is the weight - 4300g vs 3400g for Nikon Z or only 2350g for Fuji X.

I know the GF glass is supposed to be stunning, so is it crazy to be considering switching to GFX and not planning to use any GF lenses?



May 25, 2026 at 02:11 AM
johnvanr
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p.1 #2 · GFX100S worth it if ONLY planning to use adapted lenses?


The main issue with adapted full-frame lenses is that most won’t cover the whole sensor. If you crop, that’s fine, but then you lose some of the resolution.

Personally, I use the camera with the 35-70 Fuji most of the time. I do use adapted lenses, but only when I shoot 1x1 or panoramic.



May 25, 2026 at 04:52 AM
js47
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p.1 #3 · GFX100S worth it if ONLY planning to use adapted lenses?


johnvanr wrote:
The main issue with adapted full-frame lenses is that most won’t cover the whole sensor. If you crop, that’s fine, but then you lose some of the resolution.

Personally, I use the camera with the 35-70 Fuji most of the time. I do use adapted lenses, but only when I shoot 1x1 or panoramic.



From this thread on DPR, it looks like the EF 16-35 f2.8Liii will cover the full sensor from 18mm, which is significantly wider than the GF20-35. It vignettes badly at 16mm but probably still usable with an Xpan crop. Worst case scenario it can be used it in FF mode which will yield about the same field of view as the GF20-35. Vieri Bottazini also did a really fantastically comprehensive test of the 16-35 showing that it is usable from 18-35. The Sigma 14-24 f2.8 Art is alternatively is supposed to give full coverage from 16mm but I like to use screw-in filters so it is lower on the list for me.

The best option for the 24-70 range is probably the GF35-70 as you suggest John. Plus it is lighter than the EF options and quite inexpensive for first party native GF glass. The alternatives would be the EF24-70 f2.8L or EF24-105 f4L but I think they might need to be used in FF crop mode (which still would give uninterrupted focal coverage combined with either the EF16-35 or GF20-35). This is the only conclusive info I can find regarding the mid-range EF zooms on GFX (there would have been significantly better coverage with the rear baffle removed I think): https://www.fujirumors.com/steelsring-canon-ef-to-fujifilm-gfx-autofocus-adapter-test/


From this FM thread it looks like the EF100-400 provides pretty much full coverage on GFX: https://www.fredmiranda.com/forum/topic/1833950/



May 25, 2026 at 06:02 AM
mabra
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p.1 #4 · GFX100S worth it if ONLY planning to use adapted lenses?


For landscape and architecture, I would unreservedly recommend the GF35-70 as a starting point. Stop it down to f/8, f/11, or f/16, and you have everything you could ever want. The lens pairs beautifully with the 50SII, and the autofocus is absolutely perfect for landscape and architecture photography. The 100S would be an alternative offering higher resolution and slightly better dynamic range; however, if I were you, I would instead use that price difference to save up for an additional lens—such as the GF20-35 (or perhaps the GF50). And as for adapting lenses—unless you already own the lenses in question—you are better off investing directly in native GF glass; you won't be disappointed.


May 25, 2026 at 08:15 AM
burningheart
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p.1 #5 · GFX100S worth it if ONLY planning to use adapted lenses?


If you are not familiar with the online spreadsheet reference it shows the compatibility of many many adapted lenses on GFX, Hassleblad. It is a great resource to get an idea of what to expect when using adapted lenses.



Medium Format Adapted Lens Reference



May 25, 2026 at 09:44 AM
Rand47
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p.1 #6 · GFX100S worth it if ONLY planning to use adapted lenses?


The answer is no. I have the GFX system with most of the lenses. Bodywise I have the OG GFX 100 (my favorite) and the GFX 100 II. They are fabulous, because, I print LARGE. And, because of the tilt shift lenses.

I also own the X-T5 and X-H2 and a bunch of good Fuji glass for them, and the Viltrox Pro lenses. This system is also fabulous and great for prints up to 20x30”.

In my opinion you’ll get precisely nothing from putting sub-optimal lenses (image circle not quality) on a GFX body. THE reasons to own GFX are: the GF lenses; and printing LARGE.

With advances like DXO Pure Raw and Gigapixel AI, the margin between my X and GFX system is shrinking. The remaining differences are in dynamic range, the incredible fine detail capture ability, the native tilt shift lenses, and the HUGE and bright EVF on the GFX 100 II, and very little else up to something larger than 20x30.

From what you describe in your OP, grab any one of the 40mp Fuji X bodies, and be happy with the system you have!

Rand




May 25, 2026 at 09:58 AM
RoamingScott
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p.1 #7 · GFX100S worth it if ONLY planning to use adapted lenses?


Check out this dude's channel, he has adapted a bunch of EF lenses with great success. In general, the "advice" you've been given so far is very biased and not all that useful.



That said, a Z8 with a 14-24, 24-120, and 100-400 is a world class kit that is more usable in every single way over anything GFX can do natively, short of pure resolution (which doesn't really matter in the end unless you're making billboards). Sometimes you just gotta suck it up when it comes to a little bit bigger size.



May 25, 2026 at 11:09 AM
SGinNorcal
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p.1 #8 · GFX100S worth it if ONLY planning to use adapted lenses?


I agree that w/o any of the great GF lenses, there isn't enough reason to switch to a Gfx body. I'm sure you would get great shots and get some of the wonderful medium format look when everything works together. But when using full frame lenses, even ones that work well are usually not 100% coverage at all times. I have the Canon 100-400L and it is a great lens, with the baffle removed, the vignette is minimized but at times still present. I still use it some as there is no native zoom with this range. I would be really surprised if those smaller FL Canon zooms could match what the 20-35 and 45-100 (or 32-64) can do. I've not used those Canons so I can't say for sure. To me, it would be a shame to have a Gfx and not experience the 55 and 110 (never used the 35, 45, 63, or 80), I feel they allow you to take full advantage of the big sensor. In my experience with Canon 100-400 and 135/f2, I get some good shots but spend quite a bit of time cleaning them up. Vignette/cropping, color and exposure adjustments, rare to having something great SOOC. Unless you already own the Canon zooms mentioned, then I would answer this differently.
My hiking combo is X-T5, 16-55II, Sigma 12/1.4, and 70-300. Its a great system for landscape on the move when the huge depth of field of APSC suits your purposes.



May 25, 2026 at 11:23 AM
zhangyue
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p.1 #9 · GFX100S worth it if ONLY planning to use adapted lenses?


The whole reason I love Fuji GFX system so much is adapting glass on it. With tilt EVF adapter, GFX100II is my favorite system ever. Ergo is just perfect for me to have quick access on any feature I want to use without dive to menu, I can shooting any angle with andded adapter.
For Glass, I only bought 35-70 for travel. Rest all rely on adapting glasses. Nikon 58G, Leica 80lux R and Zeiss classic ZF.2 and also Contax 645 glasses and Leica S glasses all with smart adapter. This is the only system allow me to explore full glass potentials on rendering or raw performance.
I used the system to shoot a small video clip too with manual focus and Fuji JPEG engine. This is awesome feature for guy like me don’t want spend too much time on video editing. And 65x24 format is very cool too. If I am forced to have single system forever, it will be GFX.



May 25, 2026 at 04:13 PM
Makten
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p.1 #10 · GFX100S worth it if ONLY planning to use adapted lenses?


js47 wrote:
I know the GF glass is supposed to be stunning, so is it crazy to be considering switching to GFX and not planning to use any GF lenses?


Yes. Why on earth buy Canon lenses instead of GF lenses?

Edit: If you already have EF lenses, that's a different story.

Edited on May 26, 2026 at 09:40 AM · View previous versions



May 25, 2026 at 04:47 PM
 


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Makten
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p.1 #11 · GFX100S worth it if ONLY planning to use adapted lenses?


burningheart wrote:
If you are not familiar with the online spreadsheet reference it shows the compatibility of many many adapted lenses on GFX, Hassleblad. It is a great resource to get an idea of what to expect when using adapted lenses.

Medium Format Adapted Lens Reference


That "compatibility" is pure opinion, not even close to facts. I know several lenses that I consider useless on GFX that are "fine" according to that spreadsheet.

Edit: Not to mention that it doesn't even take curvature of field into account, which in many (most?) cases is a much worse problem than vignetting.



May 25, 2026 at 04:48 PM
engardeknave
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p.1 #12 · GFX100S worth it if ONLY planning to use adapted lenses?


I used premium Canon EF lenses professionally on GFX for years when there was no equivalent GFX option. I bought and rigorously tested basically every non-GFX lens that could conceivably work well with that platform. It would be insanity to do so today. More than half the value proposition of GFX is the lenses.


May 25, 2026 at 10:29 PM
js47
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p.1 #13 · GFX100S worth it if ONLY planning to use adapted lenses?


Thanks everyone for the thoughtful and informative replies. I'll try to respond to you all...


May 26, 2026 at 09:27 AM
js47
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p.1 #14 · GFX100S worth it if ONLY planning to use adapted lenses?


mabra wrote:
For landscape and architecture, I would unreservedly recommend the GF35-70 as a starting point. Stop it down to f/8, f/11, or f/16, and you have everything you could ever want. The lens pairs beautifully with the 50SII, and the autofocus is absolutely perfect for landscape and architecture photography. The 100S would be an alternative offering higher resolution and slightly better dynamic range; however, if I were you, I would instead use that price difference to save up for an additional lens—such as the GF20-35 (or perhaps the GF50). And as for adapting lenses—unless you already own the lenses in question—you
...Show more

Thanks for that recommendation. I do think I probably will end up with the 35-70 if I transition to GFX since it is smaller, lighter, and cheaper than the EF24-70 f2.8L (which happens to be about the same size and weight as the GF32-64 f4). Even if the GF35-70 does have a rather uninspiring aperture range....


Makten wrote:
Yes. Why on earth buy Canon lenses instead of GF lenses?


Cost mainly.... And I'll need an adapter for a 100-400 anyway since there is no GF native equivalent for that range, so might as well consider adapting the rest of the lenses too at that point.


engardeknave wrote:
I used premium Canon EF lenses professionally on GFX for years when there was no equivalent GFX option. I bought and rigorously tested basically every non-GFX lens that could conceivably work well with that platform. It would be insanity to do so today. More than half the value proposition of GFX is the lenses.


Would you happen to have any notes from your testing? It'd be very valuable to hear from someone with known high standards.



May 26, 2026 at 10:49 PM
js47
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p.1 #15 · GFX100S worth it if ONLY planning to use adapted lenses?


RoamingScott wrote:
Check out this dude's channel, he has adapted a bunch of EF lenses with great success. In general, the "advice" you've been given so far is very biased and not all that useful.

That said, a Z8 with a 14-24, 24-120, and 100-400 is a world class kit that is more usable in every single way over anything GFX can do natively, short of pure resolution (which doesn't really matter in the end unless you're making billboards). Sometimes you just gotta suck it up when it comes to a little bit bigger size.


Thanks Scott, that is a new channel for me and there is some good info there!

My issue with the Z8 is its size. It sounds like an insane thing for someone considering the GFX100S to say, I know. But the Z8 is the same size and weight as the GFX100S -- what am I getting for that if I don’t care about burst shooting or autofocus or video? If I shoot the GFX in FF Crop Mode with good EF L-series glass, I should theoretically get very similar results -- except I’d have the option of using the entire sensor where the adapted lens allows. Plus, the resulting FF images would be 60 MP instead of 45 MP (not that 45 MP isn’t enough).


zhangyue wrote:
The whole reason I love Fuji GFX system so much is adapting glass on it. With tilt EVF adapter, GFX100II is my favorite system ever. Ergo is just perfect for me to have quick access on any feature I want to use without dive to menu, I can shooting any angle with andded adapter.
For Glass, I only bought 35-70 for travel. Rest all rely on adapting glasses. Nikon 58G, Leica 80lux R and Zeiss classic ZF.2 and also Contax 645 glasses and Leica S glasses all with smart adapter. This is the only system allow me to explore full
...Show more

I am very glad to hear you have a good experience adapting, even if your goals for adapting, I think, are quite different from my own.

Complete freedom to crop is a main motivation for upgrading. I love the Xpan format. And recently I was shooting some architecture but I was in a hurry... when I got back to the computer, I noticed tons of great new compositions. But since I was only starting with 20 MP, the resulting crops were only a few MP. Maybe big enough for screen or printing postcards, but no more than that. Slightly heartbreaking.



May 26, 2026 at 11:47 PM
js47
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p.1 #16 · GFX100S worth it if ONLY planning to use adapted lenses?


burningheart wrote:
If you are not familiar with the online spreadsheet reference it shows the compatibility of many many adapted lenses on GFX, Hassleblad. It is a great resource to get an idea of what to expect when using adapted lenses.


I was familiar, thanks


Rand47 wrote:
The answer is no. I have the GFX system with most of the lenses. Bodywise I have the OG GFX 100 (my favorite) and the GFX 100 II. They are fabulous, because, I print LARGE. And, because of the tilt shift lenses.

I also own the X-T5 and X-H2 and a bunch of good Fuji glass for them, and the Viltrox Pro lenses. This system is also fabulous and great for prints up to 20x30”.

In my opinion you’ll get precisely nothing from putting sub-optimal lenses (image circle not quality) on a GFX body. THE reasons to own GFX are: the
...Show more

I also like printing large, but for me even the 16 MP files from my X-T1 were almost large enough for 20x30” (that is 163 dpi). I could definitely tell that there was something missing, but non-photographers (not looking too closely) would have been unlikely to notice. I think I’d be hard-pressed to notice the difference between two well-made prints if one was from a 30 MP camera and the other was from a 100 MP camera. That said, I think I still would be able to tell since 30 MP at 20x30” is only 223 dpi….

The big advantage of so many MP for me is freedom to crop. With a 16 MP, 20 MP, or even 26 MP camera, there is really not much you can do beyond horizon straightening if you want to get a great large print. Keystone corrections can be devastating, let alone taking an Xpan or portrait crop. 102 MP lets me take an Xpan or portrait crop and still have 50 MP, which could easily reduce to 30 MP if keystone corrections or framing adjustments are necessary.

These are mostly edge cases though, and you are absolutely right that the Fuji X system makes the most sense, especially for someone who hikes to get to locations. An X-T5 setup for 12-450mm eq (8-16, 16-55ii, 70-300) would weigh 3500g compared with the lightest GFX100S setup for 16-315mm eq (20-35, 35-70, EF100-400) at 5600g. 2kg is a lot! A 10 MP picture that you take is better than a 100 MP picture that you don’t take….


SGinNorcal wrote:
I agree that w/o any of the great GF lenses, there isn't enough reason to switch to a Gfx body. I'm sure you would get great shots and get some of the wonderful medium format look when everything works together. But when using full frame lenses, even ones that work well are usually not 100% coverage at all times. I have the Canon 100-400L and it is a great lens, with the baffle removed, the vignette is minimized but at times still present. I still use it some as there is no native zoom with this range. I would be
...Show more

That is good to know that using the GFX with adapted lenses (even lenses that adapt well) adds post-processing overhead. I hate post-processing, and one of my main goals in switching back to Fuji is to shrink my editing workflow.

Would you say that you need to spend a lot of time cleaning up shots taken with EF lenses on GFX in FF “crop” mode? Or only when using the entire sensor? I mentioned it above, but the GFX100S is essentially the same size as the Nikon Z8. So I can’t help but wonder if using the GFX100S with adapted EF L-series lenses in FF crop mode would be like using a full-frame Fujifilm Z8 but with the ability to utilize the full sensor with GF lenses or when practical with adapted lenses.



May 27, 2026 at 01:02 AM
engardeknave
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p.1 #17 · GFX100S worth it if ONLY planning to use adapted lenses?


js47 wrote:
Would you happen to have any notes from your testing? It'd be very valuable to hear from someone with known high standards.


Yeah, I have a library of test shots somewhere. Off the top of my head I can say that only 3-4 lenses that were just good compared to GF. The 24mm TSE LII was my favorite for shooting exteriors and any kind of landscape. It was amazing for GFX at the time, but the resolution, while good was never in the same universe as the GF glass. I never tried that GF 30mm T/S lens but I am tempted to buy one just to test it out. I would have killed for such a lens when I was doing this professionally.

By the way, I have recommended shift lenses (tilt is useless) to like three people here recently and I am going to give you the same advice. I was reluctant to spend the money when I bought my first one. I didn't really understand the point. After a while ended up exclusively using the 24 TS-E exteriors and landscapes. It is an elevator on your camera. And it also does handheld panos. Don't buy if you are into pics of grass or asphalt.

Anyway, the 17mm TSE was barely usable--mush on the edges. Almost every wide angle lens had this to one degree or another. Barrel distortion at the edges is exaggerated by the GFX format due to its use of parts of the glass that were never meant to be captured, even for lenses that do cover the sensor. So for architectural photography, you will end up with vertical lines that are very obviously curved. This is a disaster for interiors. I found the Sigma 14-24mm ART reasonably free of distortion at I think about 20mm. Still not even close to GF glass.

I tested my old favorite 85mm 1.2 LII portrait lens. It was abysmal. I was ready for it to be soft, which it was. But somehow it felt like the bokeh got harsh and terrible. Not the same as on Canon. I acquired the wildly expensive Nikon 19mm f/4 PC (tilt/shift), which you would think would be perfect for GFX, but it ended up having horrific distortion. Basically useless. Many such experiences. I have intentionally tried to forget how much money I lost learning this lesson.



May 27, 2026 at 01:32 AM
SGinNorcal
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p.1 #18 · GFX100S worth it if ONLY planning to use adapted lenses?


js47 wrote:
That is good to know that using the GFX with adapted lenses (even lenses that adapt well) adds post-processing overhead. I hate post-processing, and one of my main goals in switching back to Fuji is to shrink my editing workflow.

Would you say that you need to spend a lot of time cleaning up shots taken with EF lenses on GFX in FF “crop” mode? Or only when using the entire sensor? I mentioned it above, but the GFX100S is essentially the same size as the Nikon Z8. So I can’t help but wonder if using the GFX100S with adapted EF
...Show more

I haven't used my EF much in crop mode, but certainly it would eliminate cropping and/or fixing vignette. To be clear, in my earlier post I wasn't suggesting that adapting EF is a bad idea. Just that some of the GF lenses are really good and I wouldn't want to miss out on those. But I'm also happy to not be limited to native only. I have Fringers for EF and Contax 645 and love having the expanded options. I will probably try the Sigma 85 Art for EF, and possibly the 35/1.4. So I recommend a mixed approach.



May 27, 2026 at 02:05 AM
Makten
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p.1 #19 · GFX100S worth it if ONLY planning to use adapted lenses?


engardeknave wrote:
Yeah, I have a library of test shots somewhere. Off the top of my head I can say that only 3-4 lenses that were just good compared to GF. The 24mm TSE LII was my favorite for shooting exteriors and any kind of landscape. It was amazing for GFX at the time, but the resolution, while good was never in the same universe as the GF glass. I never tried that GF 30mm T/S lens but I am tempted to buy one just to test it out. I would have killed for such a lens when I was doing this
...Show more

Some of the quirks you describe are probably due to the much thicker sensor stack of GFX cameras, that can ruin sharpness (even in the middle of the frame), introduce curvature of field and worsen chromatic aberration, compared to when used on the native mount/sensor.

I think many people are forgetting that a lens isn't necessarily usable just because "it covers". I would personally much, much rather use an older 50 mpix GFX body with GF lenses (which actually is what I do), if cost is an issue. Or just an FF system instead.



May 27, 2026 at 06:16 AM
DES-1
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p.1 #20 · GFX100S worth it if ONLY planning to use adapted lenses?


js47 wrote:
...so is it crazy to be considering switching to GFX and not planning to use any GF lenses?


Yes. Start with an inexpensive lens like the GF 35-70 and try it for awhile, you'll soon have an answer.




May 27, 2026 at 09:15 AM
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