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

reviewer#45759 date: Sep-19-2021
sharpness: 4.5
color: 5
build: 5
distortion: 4
flare control: 4
overall: 4.5
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:Minolta 17-35/3.5 G
Zeiss Loxia 21/2.8
price paid:c. $$NZ250 used.
positive:Good build,
compact size
negative:Not D-encoded
Soft corners wide open.
Not weather-sealed
comment:I did like this lens. For a while it was my main-wide angle lens for the a900, until I got the Minolta 17-35/3.5 G.
The relatively bright (f2.8) aperture in combination with the a900's OVF made it quite easy to use in the dull light conditions of the NZ forests.
It had the benefit of being a good, compact lens of low weight, despite the 72mm filter size.

While it did quite well stopped down (and if you're using this as a landscape lens, you will be shooting at smaller apertures than f2.8) the corners and edges were softer at wide apertures.
There was also a degree of curvature to the lens that while not bad, could still distort the image if you were hoping for straight lines. Nonetheless, the Sony 20mm f2.8 lens profile could still be used to correct this in Lightroom or similar.

Overall, quite a nice wide-angle prime stopped down, but for detail and contrast, the Minolta 17-25/3.5 G was superior. And the E-mount Zeiss Loxia 21/2.8 is optically, much much better.

If you want a relatively light and compact wide-angle lens that will produce lovely landscape images stopped down a bit for the A-mount, it is a good option.

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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