Sigma 12-24mm F4.5-5.6 EX Aspherical DG A-mount lens review by awa54

reviewer#44328 date: Jul-1-2019
sharpness: 4
color: 5
build: 5
distortion: 4
flare control: 4
overall: 4.4
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 MP24MP24 MP36MP36 MP42MP42 MP
ownership:I own this lens
compared to:Min. 20mm f2.8
Min. 24mm f2.8
Sigma 14mm f3.5
Sigma 24mm f2.8 Super Wide II
Sigma 10-20mm f4-5.6 (APS)
Tokina 19-35mm f3.5-4.5
price paid:250USD
positive:excellent range on a FF body
very well corrected linear distortion
very good focus and zoom feel
flare and hazing are exponentially better than on the old 14/3.5, which has a similar protruding front element (and huge flare issues) and similar to the more modern Sigma 10-20mm APS
negative:exposed front element
slow max. aperture
rear mounted gel filters
fairly large (though quite light considering the number of elements)
comment:This lens offers a fantastically wide view at 12mm on a FF body (or film camera), the linear distortion is extremely well corrected (better than the APS format 10-20mm) and overall performance is very respectable, especially considering the range it covers.

At 24mm, the primes beat it at sharpness but not by a huge amount and color, flare and distortion are not far off of the Minolta 24 (it equals or exceeds the old Sigma).

At 20mm the Minolta prime again wins in sharpness, but not by much and everything else except max. aperture and color rendition are very close.

This lens crushes the old Sigma 14mm prime in every respect!

Compared to the other zooms, it has better distortion correction, a wider wide-end and as good or better overall IQ.

If you want a true ultra-wide for your FF body, this lens is a winner. Like most ultra-wide lenses (even primes) the sharpness is a bit underwhelming compared to a standard or portrait length prime, but the only way to really get pixel-peepable panoramas is with a multi-image stitch anyway.

rating summary

lens image
  • total reviews: 49
  • sharpness: 4.04
  • color: 4.39
  • build: 4.49
  • distortion: 4.49
  • flare control: 3.65
  • overall: 4.21 - Home of the alpha system photographer
In memory of Cameron Hill - brettania