In theory, these cameras should have the same dynamic range at base ISO values. Confirmation of this is on the nerd site photonstophotos.net. I was curious to check if this is the case and what will come out of comparing the best full frame for 2020 - Canon EOS R5 - versus the relatively old (2016) medium format - Fujifilm GFX 50S.
What is there in terms of detail?
If you put on the top-end lens for a full frame, then the difference in detail will be minimal, but nevertheless, the medium format still has an advantage in micro contrast. I spent most of the test on TS-E 24mm f3.5L on Canon, but I also compared the photo with a better TS-E 17mm f4L... The GFX 50S is equipped with a Fuji GF 32-64mm F4 R LM WR lens, which demonstrates ideal image quality. In general, with the medium format, the story is such that you need to use native optics to fully reveal it. If on R5 I can put on a pancake EF 40mm f2.8 STMthen on medium format Although this lens provides almost complete coverage and high detail, the photography experience is not the same. In general, the details are very high on both cameras, but the GFX50S, anyway, is slightly ahead of the camera with a smaller matrix.
About dynamic range
If you just compare how these cameras pull out shadows and overexposures, then the original graph is correct and I tend to agree with it. The dynamic range plus mine is similar in extreme values. But this, if we talk specifically about the darkest and brightest areas. If we compare halftones and shadows - that is, the middle areas - then the medium format again has an advantage. It feels good, but the photo with the GFX 50S looks softer and more voluminous. I tried to achieve the same effect through post-processing. It turns out very close, but still not the same. So, the victory again belongs to the medium format.
Is there a big difference in quality between the R5 and the GFX50S?
No. The differences I'm talking about are extremely small. In terms of the aggregate characteristics, the R5 goes far ahead of the GFX50S. In terms of photo quality, the differences between them are very subtle. The medium format GFX 50R / S will be of interest to a photographer who does not even want to hear about the video button, but is chasing the maximum volume and detail in the frame.
It should be understood that the medium format will cost you more, despite the plus or minus the similar cost of carcasses. On the R5, it is not at all necessary to wear top-end RF optics to get a high-quality result. There are tons of quality EF lenses out there. But for the GFX system, native medium format optics are an indispensable condition. I chose a functional full frame and don't regret it, but the longing for medium format still remains ...
The tests themselves can be viewed in this video: