If I compiled the camera gear dream list of thousands of professional and serious amateur photographers, I'm sure that the "zoom lens wider than f/2.8" line item would bubble up to near the top of the list. I know that I have long wanted to see such a lens.

“Three ‘primes’ in one lens” – in the case of the tested Sigma such a statement is not just an empty marketing slogan, quite the opposite in fact. When it comes to the resolution the Sigma 24-35 mm is not worse than any brand name fixed focus f/1.8 and f/2.0 device.

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  unique parameters,, solid and stylish casing,, sensational image quality in the frame centre,, excellent resolution on the edge of the APS-C/DX,, better resolution on the edge of full frame than that of many fixed focus lenses,, moderate longitudinal chromatic aberration,, slight lateral chromatic...

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  noticeable distortion on full frame at 24 mm,, a bit too high coma,, very high vignetting across the whole focal range.

I only gave it 4 rather than 5 stars because of its weight/size. It's not a lens I take everywhere with me, but it has become one of my favorite lenses to use professionally. It's very sharp (anyway, you can use the Sigma dock to improve tack focus) and has very little distortion and no noticeable...

The most perfect lens I ever had :-) but be prepared that this is not a standard zoom lens, the magnification is not great from 24 to 35mm ;-)

I am disappointed. On the first day of shooting, I noticed that the focus is bad. Made test-pictures on the table and got it. Further adjusting through the apparatus the best result was this. Now I just pray that the dock station has something to fix. Probably this lens is very good, just not mine.

BEST purchase to date! I'm a full time wedding photographer and shoot prime lenses. I had a 24-70 2.8 L lens that I HATED to shoot with (soft, and the 2.8 aperture is awful). But I needed a wide lens for tight spaces (getting ready photos, large family groups, etc) and bought this lens.

This has to be the most tragically ill-conceived lens ever. We can picture the marketing/design meeting where this misfit was conceived: "What if we make a full-frame zoom that combines 24mm, 28mm, and 35mm focal lengths in one package? Irresistable, right?" OMG, let's count the fails... 1.

Extremely bad front and back focusing issues. Even the ones that were in focus had low quality.

A 24mm f2 prime and a 35mm f2 prime in one lens, is this real?You need this lens, you won't remove it from your body, I swear.I use it on my 5D III for photography and on my sony fs5 for videography and it's fulfill all my needs.It's sharp, great depth of field, and sweet vignetting.

So I don't know how many people are shooting on a GH3/4/5(!), with the Metabones Speedbooster (XL 0.64), but it pairs amazingly with this lens. I could have chosen a wider range zoom at 2.8, or a cheaper wider 4.0 to boost, but I dreamed of a zoom lens as fast as my primes. This is it.

I wanted to go a little wider as i shoot 35 & 85mm Primes at weddings.A year on and im still shooting with this Lens. amazing quality throughout. I cant wait to see what else Sigma has to offer in the future :D

Great lens at a great price for us amateurs.