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This review is from: Sigma 10-20mm f/3.5 EX DC HSM ELD SLD Aspherical Super Wide Angle Lens for Canon Digital SLR Cameras (Electronics)
This lens is awesome. But it's not that good. But I love it. Lemme explain.
I bought this lens to shoot interiors without having to stitch huge panoramas out of relatively narrow 28mm (yes, ASP-C makes even 28mm narrow). But I've found that I'm using it for much more fun stuff, like portraits from 6 inches away, macroscapes of foliage, and just all-around wacky wide angle madness.
For the wackiness, this lens is incredibly fun to use. AF is pretty fast for such a wide lens, and pictures are very crisp where it matters. However, the edges are what keep me from truly loving this lens. At 10mm (circus mode), the edge of the picture is utterly useless. Stretched out like taffy, chromatic aberration like nobody's business, and just too silly to even contemplate including in a printed version. Maybe this is normal for a 10mm, and maybe this lens is actually better than others at this focal length. But to me, the 10mm end can only be used for humorous photos because the quality just doesn't suit any other purpose. Luckily at least I have Canon raw software that has a profile for this lens and can help with distortion & CA.
But now we get around 14-18mm, and it starts looking acceptable again. The distortion is down, the CA is under control, and it's once again useable for serious pursuits. And at 20mm, images are nearly gorgeous.
Now for build quality: this sucker is solid, and the controls feel precise and smooth if slightly tight. My focus ring still needs to loosen up a touch, but this will come with use.
While not perfect, this lens has received nearly equal praise to the Canon 10-22, and in a few aspects (center sharpness, constant 3.5 instead of 3.5-4.5) actually beat out its competitor. Oh, and the Sigma a couple hundred dollars cheaper than the Canon. If you're looking for this zoom range, you'll be happy with this choice as long as you are aware of the compromises at the ultra-wide end. Google a professional review to see closeup lab tests. I think there's even a comparison review out there showing Sigma vs Canon side by side so you can make an informed decision.
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Initial post: Apr 2, 2014 6:23:56 AM PDT
You might want to try DXO software to correct distortions, it is pretty powerful.
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