GFX 100s Fringer EF-GFX Lens Adapter
Here is a review of the GFX 100s Fringer EF-GFX Lens Adapter. I adapted the Sigma 105mm f1.4, 85mm f1.4, 50mm f1.4, 35mm f1.4, and 24mm f1.4. I picked the Fringer over other adapters because it has an aperture ring. This makes using the GFX system much easier. When compared to native lenses the autofocus was paralleled. The only difference I noticed was that the Sigma lenses were quicker to focus and much quieter. the 35mm and 24mm struggled a bit more to focus at f/1.4. I also experienced the Fuji 23mm f/4 struggling as well. So my conclusion is that wider lenses just don’t work as well on the GFX system when comes to autofocus.
You can watch the individual reviews to see how well they work on a Medium Format system. The 105mm, 85mm, and 50mm show little signs of vignetting which were easily corrected with a lens profile. The 35 and 24mm do have come corner issues that cannot be corrected. I had to crop the images with a 4×6 or 16×9 ratio. I’m fine with this since it allows me to get some creative wide images with some amazing depth of field and allows for lower-light portraits.
Sigma 105mm f/1.4 Review
Here is a video of how well the Simga 104 f/1.4 lens works on the GFX 100s with the Fringer EF-GFX Pro Adapter
Sigma EF 85mm F/1.4 Review
The Sigma 85mm worked great with the Fringer Adapter. I slightly out performed my Fuji GF 80mm when it came to some green fringing. When compared with the 80mm the Sigma 85mm was just as sharp at F1.8. It was definitely softer at F1.4 but allowed for some extra character.
Sigma EF 50mm F/1.4 Review
the Sigma 50mm F1.4 was super fun. I had no vignetting that wasn’t able to be corrected in Lightroom. This lens is very sharp and holds up well at 100 megapixels.
Sigma EF 35mm F/1.4 Review
The Sigma 35mm F1.4 was fun. I did have some harsh uncorrectable vignetting on the corners. I had to crop into a 4×6 or 16×9, but this lens is still fun.
Sigma EF 24mm F/1.4 Review
The Sigma 24mm F1.4 had the worst vignette of all of the lenses. It still worked when cropping to 4×6 and 16×9.