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

reviewer#8648 date: Feb-11-2011
sharpness: 5
color: 5
build: 5
distortion: 4
flare control: 5
overall: 4.8
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:Minolta 24mm
CZ 16-80mm
price paid:300 USD
positive:Sharp-corner to corner
Consistent & accurate color
Flare is easy to control
Tough little lens
negative:Distortion
Takes more time to compose
comment:This lens is a terrific performer on the FF a850. It allows for great coverage and appears to have no trouble with light fall-off or vignetting (except see below). The distortion is to be expected on a lens of this type, but I have either used it to my advantage or corrected it in PTLens. I will probably order the grid viewing screen for the a850 as the multiple lines will help in keeping the horizon straight. It is unquestionably a very sharp lens in the center and out at the corners. Maybe f2.8 might be a little soft but f4-8 is just outstanding. I have not tried it on the a700 simply because I have the CZ 16-80 to handle the focal range. On full-frame, it is, of course, a little wider than the 16mm on crop sensor. Very nice to have this angle of view. It is small and light. I have experimented with a polarizer and get a slight bit of vignetting. Using this filter on such a wide angle lens can also be problematic, because the tone value of the sky is affected by the angle to the sun. It is becoming a favorite on the a850; however, you must slow down and take your time in composing. Otherwise I end up with some very sloppy shots.

rating summary

lens image
  • total reviews: 37
  • sharpness: 4.51
  • color: 4.81
  • build: 4.57
  • distortion: 4.27
  • flare control: 4.32
  • overall: 4.50
Dyxum.com - Home of the alpha system photographer
In memory of Cameron Hill - brettania