Minolta AF 20mm F2.8 RS A-mount lens review by LKB

reviewer#9681 date: Dec-7-2011
sharpness: 5
color: 5
build: 5
distortion: 4
flare control: 4
overall: 4.6
tested on:
  • film camera:Film camera
  • APS-C: 6MP6 MP; 10MP10 MP; 12MP12 MP; 14MP14 MP; 16MP16 MP; 20MP20 MP; 24MP24 MP
  • full frame: 12MP12 MP24MP24 MP36MP36 MP42MP42 MP
ownership:I own this lens
compared to:Min 50/1.7
Sony 50/1.4
Sony 35/1.8
price paid:£250 (used)
positive:wide lens
work with Flash
negative:AF biased towards inf
comment:Those are my only wide-angle lenses, bought primary for the indoor architecture work and landscape. I also tend to do portraits with them - wide lenses give a very different and stunning results, even on my APS-C body.
Those lenses are sharp, and when correctly used sharp from 2.8, thought read on about AF.

What I really dont like is the AF - it seems to be back-focusing and I cant verify it on my A55. Because of focal length this makes pictures less sharp that they should be - this is especial visible when taking photos of group of people. I go MF a lot just to correct for it. It seems that problem is gone by ~F7.By this time DOP is huge enough to cover the problem. I also tried short focusing or per-focusing a few times before I take a shot.

Wide open they are not as sharp as 50/1.4 but once step down, they start to match. In low light they behave different to 50/1.4 or 35/1.8 giving a softer image - useful for some.
Used with flash they provide stunning results - AF problem is much less visible and I just love sharpness and colors

Overall, is one of my most used lenses, providing me with some really stunning photos. If only AF would be less temperamental...

UPDATED: AF paragraph, sharpness notes

rating summary

lens image
  • total reviews: 37
  • sharpness: 4.53
  • color: 4.81
  • build: 4.57
  • distortion: 4.27
  • flare control: 4.32
  • overall: 4.50
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