Sigma 18-35mm F3.5-4.5 Aspherical UC A-mount lens review by profhankd

reviewer#36795 date: Mar-23-2017
sharpness: 4
color: 4
build: 4
distortion: 5
flare control: 3
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 own this lens
compared to:Various Sigma and Minolta wide zooms, e.g., baby beercan
price paid:32 USD
positive:price, FF ultrawide, good resolution, modest distortion, not much CA
negative:veiling flare, not-very close focus, some purple SA
comment:I have the identical Quantaray-branded version of this lens.

Although the glass seems clean, contrast is very low and it gives "clumpy" specular points and veiling flare -- it would be terrible on film. However, autolevels brings up the contrast and reveals excellent resolution across FF even wide open... maybe not enough for 24MP APS-C, but it is doing fine on 42MP FF. I know that doesn't sound like the other reviews here, but that's what I'm seeing -- so maybe it's a Q/C thing or maybe Quantaray branded ones are different? Anyway, price/performance is outstanding for a FF ultrawide zoom. Incidentally, no problems with AF using the LA-EA4 -- at least not after I cleaned the lens contacts with a pencil eraser.

I've posted a bunch of photos using my A7 and A7RII on DPReview; the A7RII ones are at https://www.dpreview.com/forums/post/59321906

rating summary

lens image
  • total reviews: 10
  • sharpness: 4.05
  • color: 4.20
  • build: 3.70
  • distortion: 3.60
  • flare control: 3.30
  • overall: 3.77
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