Size/weight: Smaller than expected, average weight feel for its size.
Light falloff: Makes full use of 44x33 sensor. Vignetting at f1.4 is fully correctable in Capture One using the profile from a similar lens, the Zeiss ZF.2 35 1.4. Vignetting is mostly gone by f5.6.
Corner performance: Some corner and edge smearing at infinity + small apertures on 44x33 (a crop somewhere between 44x33 and 35mm works well).
Chromatic aberration/fringing: Minor at f1.4 and requires zoomed viewing to see it. Very little haze wide open.
Sharpness: Sharp in the central area of the frame wide open at f1.4, very sharp at 2.8. f11 is sharp in all areas of the frame not affected by corner smearing and is the best aperture for maximum DOF without loss of sharpness or contrast to diffraction (compared a series at f8, f11, and f16/max).
Bokeh at f1.4: On the smooth side with low activity, but not uninteresting. Some minor edge swirl on 44x33 that adds to the character without being distracting.
Color/contrast: Typical Zeiss T*
Manual focusing on the GFX: Easiest adapted lens to manual focus I've used thus far. Image decidedly snaps into focus without aid of magnification, though magnification is necessary for 1:1 perfect focus at f1.4. Manual focus feel is similar to ZE/ZF lenses but there is a very minor bit of play when turning the focusing ring back and forth where it softly clicks to pick up the new direction.
Etherton wrote:
EXIF f/1.0 or f/1.4? Does an f/1.4 on the GFX stop down to 1.0?
It's a "dumb adapter" so the camera cannot record the aperture and defaults to showing 1.0. I put the correct f-stop in the comment below each shot above the EXIF data.
One from yesterday, using 32-64mm f4 zoom that I just bought. XPLOR600 in a medium softbox for main. AD200 with 7" reflector and 1/4 CTO gel as a bg/hair light.
Large white trillium (T. grandiflorum), Bendix Woods County Park, Indiana. GFX 50S, Laowa 15/4 macro with Magic Format Converter; 3 images stacked in Helicon.
