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

reviewer#42988 date: Jan-19-2018
sharpness: 4
color: 5
build: 3
distortion: 4
flare control: 4
overall: 4
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 MP; 24MP24 MP; 36MP36 MP; 42MP42 MP; 61MP61 MP
ownership:I used to own this lens
compared to:Sony E 16 F2.8
Tokina 17 F3.5
Sigma 19 F2.8 DN Art
Sony E 20 F2.8
Minolta AF 20 F2.8
Minolta AF 24 F2.8
Sigma 24 F2.8 SW II
Rokinon AF FE 24 F2.8
Tokina AF 20-35 F3.5-4.5 I & II
price paid:150 USD (used)
positive:Reasonably small
Flat focus plane
Heavy vignetting
Lens Compensation
Focus shift
Lateral CA
Color shift on sides
Petal hood blocks focus ring
72mm filter thread
comment:A somewhat rough looking copy missing the hood and caps purchased at an eBay auction from an individual seller.

This lens has changed very little over time. The RS version adds more curved aperture blades and a rubber cover to the focus ring and that's about it. This is a fairly small lens, though much larger than the Minolta AF 24/2.8 and 28/2.8 primes. It looks a bit like a wide converter was added to the front of those lenses. The bayonet hood looks just like a scaled up version of the 24/2.8 hood. Like the 28/2.8 this lens seems to be supported by in-body lens compensations. "JAPAN"

This copy of the RS is a bit sharper than the original I have. It is still nowhere near as sharp as the tiny Sony E 20mm F2.8 pancake lens. There is a little distortion and quite a flat focus plane.

rating summary

lens image
  • total reviews: 39
  • sharpness: 4.53
  • color: 4.82
  • build: 4.56
  • distortion: 4.26
  • flare control: 4.31
  • overall: 4.49
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