Sigma 12-24mm F4.5-5.6 EX Aspherical DG A-mount lens review by mroctopus

reviewer#2700 date: Sep-5-2007
sharpness: 4
color: 5
build: 3
distortion: 5
flare control: 4
overall: 4.2
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 own this lens
compared to:Sigma 10-20
price paid:750
positive:Excellent distortion control
Above average sharpness
Full Frame readiness
negative:Can't use UV filter (Vignetting)
Bad hood design,
Slow aperture, F4.5-F5.6.
comment:One of the reason i paid extra for this lens is the well distortion control as compared to other ultra wide, and the bonus is able to use on future full frame body.

Sharpness is good at wide open but not excellent. Give it two stop and it give you excellent sharpness. The true strength of this lens come with a very well distortion control, something you can't really get from other lens, no replacement at this moment of writing.

There are some corner softness at wide open but center region remain good sharpness. at F5.6 or beyond, Corner sharpness improve significantly.

The color is very well controlled, excellent saturation and color is more neutral (18-50EX is a bit warm). Contrast is excellent.

Need to be extra careful when walkaround with this lens, better use protective hood to protect the front element as it doesn't allow any UV filter. I can only give 3 for the build due to this reason.

rating summary

lens image
  • total reviews: 49
  • sharpness: 4.03
  • color: 4.39
  • build: 4.49
  • distortion: 4.49
  • flare control: 3.63
  • overall: 4.21 - Home of the alpha system photographer
In memory of Cameron Hill - brettania