I had the Canon 300 2.8 L USM on the GFX 100s with the Fringer adapter for a few snaps. Contrast AF worked, corner sharpnes was ok wide open and the vignetting was managable. In fact I applied the Adobe profile for the Sony E 16mm 2.8 and it seemed to be a good match.
Edit: it was the first AF version without IS.
Aug 03, 2022 at 04:10 PM
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