EDIT: Info below is about M version of the lens. Will repost in another thread.
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CV 50 APO on the R5 – IQ is not worth it for landscape. Against the RF 50 at f/5.6 and f/8, the RF out-resolves and has higher contrast than the CV. However, on the M10-R, the CV 50 APO beats the R5 + RF 50. The CV lenses, or at least this one, certainly seem optimized for the M sensor, almost to the level I would expect from a fixed-lens setup.
Adapter used: Kipon w/macro helicoid. The adapter allowed the lens to properly achieve infinity focus right before the hard stop. With the high-magnification of the R5 EVF, achieving perfect infinity focus was easy. I didn't find myself struggling going back and forth with the focus ring like I have to on the GFX with its not-as-good EVF.
Had to focus on the corners to get things equally sharp across the frame at both f/5.6 and f/8. Focusing center-bottom would leave the corners slightly soft. On the M10-R, I don't see this at all – focus is dead-on sharp across the frame at the infinity hard stop at any aperture.
Contrast and sharpness of the entire image is lower on the R5 + CV 50 APO than the R5 + RF50.
For this and other CV lenses used at close distance, the R5 works well. The CV 35 f/1.2 III and 75 f/1.5 are very sharp at close distances. The helicoid macro adapter also lets me get very close with either. But at the closer distances made possible by the adapter, sharpness was noticeably better in the central part of the frame.
My advice would be if you want to use a CV M-version lens on a non-M body and get close to M-level results at infinity, I would use the SL2/SL2-S or maybe the Z6/Z7 instead.
CV 50 APO on the R5 – IQ is not worth it for landscape. Against the RF 50 at f/5.6 and f/8, the RF out-resolves and has higher contrast than the CV. However, on the M10-R, the CV 50 APO beats the R5 + RF 50. The CV lenses, or at least this one, certainly seem optimized for the M sensor, almost to the level I would expect from a fixed-lens setup.
Adapter used: Kipon w/macro helicoid. The adapter allowed the lens to properly achieve infinity focus right before the hard stop. With the high-magnification of the R5 EVF, achieving perfect infinity focus was easy. I didn't find myself struggling going back and forth with the focus ring like I have to on the GFX with its not-as-good EVF.
Had to focus on the corners to get things equally sharp across the frame at both f/5.6 and f/8. Focusing center-bottom would leave the corners slightly soft. On the M10-R, I don't see this at all – focus is dead-on sharp across the frame at the infinity hard stop at any aperture.
Contrast and sharpness of the entire image is lower on the R5 + CV 50 APO than the R5 + RF50.
For this and other CV lenses used at close distance, the R5 works well. The CV 35 f/1.2 III and 75 f/1.5 are very sharp at close distances. The helicoid macro adapter also lets me get very close with either. But at the closer distances made possible by the adapter, sharpness was noticeably better in the central part of the frame.
My advice would be if you want to use a CV M-version lens on a non-M body and get close to M-level results at infinity, I would use the SL2/SL2-S or maybe the Z6/Z7 instead.
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