I’ve obtained an excellent sample of the Fujifilm GF 35-70mm f/4.5-5.6. I can find (yet) no sign of asymmetry or weird deviations. While I have not pressed it into field use yet, it performs uniformly well on the demanding roof scene below. Still, demanding infinity-focus landscape scenes might show up something undesirable.
The question is not so much “which is better”, but “how large/small are the differences”? The law of diminishing returns applies.
In diglloyd Medium Format (only):
Includes images up to full resolution through f/11, plus matched crops and extensive analysis.
This comparison sheds considerable light on the relative sharpness abilities of each system. I’ll add landscape comparison as conditions allow on future trips.
Dr S writes:
Not that I own one but I am curious what the Nikon D850 with a Zeiss Otus 35mm lens would do with your same protocols used in the A1/GFX100s comparison. Yes, only 45mp, but a curiosity nonetheless with one of the best lenses in the world and the previous champion DSLR. Yes there are other lenses in your bag you could use and.... if you are so inclined.... please do so. Maybe I am not the only one who is curious.
DIGLLOYD: I'll consider it. Results should be little different. The Zeiss Milvus 35mm f/1.4 is not an Otus until f/2, but it’s a very very fine lens.