Comparison of lenses Minolta MD 28mm 1:2.0, Minolta MD 28mm 1:2.8 (7 elements 7 groups), Minolta MD 28mm 1:2.8 (5 elements 5 groups), Minolta MD 28mm 1:3.5
IMPORTANT NOTE: This was the first lenses-comparison on this site. That time I had copy of MD 28mm 1:2.8 5×5 version and MD 35mm 1:3.5 in bad cosmetic appearance. So, after I got another copies of these lenses I’m remaking the tests. No changes in conclusion and results but I recommend to read latest article because it contains more convenient structure. Here you can find it.
This comparison is correct only for conditions and equipment used for tests. Test results can be differ if any element is changed.
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 and up to F11. 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.
As you know, Minolta’s N-MD series lenses haven’t “half-click” after the first aperture position, so I stopped ring in the middle position, but it’s impossible to set it precisely, so, if you see that a picture taken, for example, with N-MD 28mm f/2.0 on aperture 2.4 – it means that picture was taken on aperture set in the middle position between 2.0 and 2.8. Same for N-MD 28mm f/2.8 with photo taken on f3.5 etc.
- Sunlight has been changed during the session. A lot of times, every 2 minutes.
- I am just a man, I do not pretend that in all cases my focus settings were absolutely accurate. But I aspired to it.
- My Minolta N-MD 28mm f/2.8(5×5) looks like survivor after small nuclear war. I admit that it probably can has a very small contrast drop, but hope that it doesn’t affect resolution tests.
Test results for the center:
Test results for the middle:
Test results for the corner:
It’s difficult to select the winner in this comparison. Really:
- Center – all are the same
- Middle – MD 28/3.5 is better than others (surprise!), MD 28/2.8 7×7 is on the second place, MD 28/2.0 is third, and MD 28/2.8 5×5 is losing here, but…
- Corner – MD 28/3.5 and 28/2.0 both are the same and noticeable better than both MD 28/2.8 which are the same too.
Additionally we should remember that MD 28/2.0 has F2.0, and MD28/3.5 has F3.5 only. So, I don’t know how to select one from this pack, because all of these lenses are good for different tasks. Just one idea – if lens is needed for landscapes only, then photographer can save a money and take cheapest MD 28/3.5 with no doubts. But, please, make your personal conclusions based on these test results.