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LensWars: Chiyoko Super Rokkor 50mm f/2.8 vs. Super Rokkor 50mm f/2.0 – comparison

Comparison of lenses Chiyoko (Minolta) Super Rokkor 50mm 1:2.0, Chiyoko (Minolta) Super Rokkor 50mm 1:2.8

I have warm feelings for both lenses, and it isn’t secret that 50/2.0 is more powerful, but it may be interesting to see the difference in real samples.

This comparison is correct only for conditions and equipment used for tests. Test results can differ if any element is changed.

Tested lenses reviews:


Test description: Camera Sony A7II (24mpx, full frame) was fixed on the tripod and managed remotely with computer display as a viewfinder. Targets (buildings) were fixed by gravity power on the distances in more than 200 meters.  All shots were made with apertures from fully opened and up to F16. ISO-100. Shutter Speed – depends on light (camera A-mode). SteadyShot – OFF. Focus was manually corrected for each shot to exclude focus-shift.

Finally, pictures were converted from ARW-files in Capture One with default settings, then cut into 300×200 px elements (100% crops), combined into diagrams and exported into JPEG-files.

  • Sunlight has been changed during the session.
  • I am just a man, I do not pretend that in all cases my focus settings were absolutely accurate. But I aspired to it.

Scene preview:


Test results:


My conclusion:


  • Both are great even if wide open. Even from the modern point of view.


  • Super Rokkor 50mm F2.0 becomes acceptable at F4 and totally sharp at F8
  • Super Rokkor 50mm F2.8 is acceptable from F5.6, and only at F11, it can provide maximum resolution. Unfortunately, this maximum level is a little bit less than what was shown by Super Rokkor 50mm F2.0 and never will be equal, even at F16.


  • Super Rokkor 50mm F2.0 becomes acceptable from F2.8, it’s not a mistake, all tests demonstrate better resolution in corners than in middle on infinity. Very good sharpness is on F5.6, and F8 is ideal for landscapes.
  • Super Rokkor 50mm F2.8 becomes acceptable at F11 and never becomes totally sharp.

That’s not a surprise that Super Rokkor 50mm F2.0 is a winner in terms of sharpness, so it’s better for landscapes, but it’s impossible to say what lens is better for other photo-styles because bigger aberrations can provide more artistic possibilities,.. or can’t – depends on the taste of the photographer.


Additionally, the performance of Super Rokkor 50mm F2.0 can be seen here:


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