Comparison of lenses Minolta MD 24mm 1:2.8, Minolta MD VFC 24mm 1:2.8.
The VFC lenses aren’t in popular optics list, hope the article will be interesting not only for photographers but for researches too.This comparison is correct only for conditions and equipment used for tests. Test results can be differ if any element is changed.
Tested lenses reviews:
Test description: Camera Sony A7II (24mpx, full frame) – fixed on the tripod. Targets (buildings) – fixed by gravity power on the distances in more than 200 meters. All shots were made with apertures from fully opened F2.8 and up to F16. ISO-100. Shutter Speed – depends on light (camera A-mode), WB – same for all shots. SteadyShot – OFF. Focus was manually corrected for each shot to exclude focus-shift affecting. Focus point – center of the picture.
Finally, pictures were converted from ARW-files in Capture One with default settings, cropped for 300×200 px elements, combined into diagrams and exported into JPEG-files.
Field curvature control on Minolta MD VFC 24mm f/2.8 is set in the center position
Note: I am just a man, I do not pretend that in all cases my focus settings were absolutely accurate. But I aspired to it.
Test results for the center:
Test results for the middle:
Test results for the corner:
I see only one slight difference between Minolta MD VFC 24mm F2.8 and Minolta MD 24mm F2.8 – on F2.8 in the middle position the non-VFC version is little bit better, just in this case – and for me it looks like an DOF-issue, so – can be excluded. I’m sure for 99,999% that both lenses provide the totally identical sharpness and contrast in real photo-sessions. Don’t know how it’s possible – these two lenses have completely different optical design.