Sigma 10 -20mm
Discussion
rhubarb said:
Love mine too, I think it starts you thinking in different ways, or at least it's started making me think a little more creatively. And you can fit soooo much into the shot as well. Here's a recent one

Anyone else see this and think 'circle'?I picked up a 10-20 for my D80 this week and went out with it on Tues night:


To those thinking of buying one, apparently Sigma prices are due to rise imminently.
Bob_Defly said:
It's not as good as the Nikon equivalent, but it's extremely good value for money.
Interesting you say that, as on balance Thom Hogan came to the opposite conclusion. I bought it off the back of his review and have been happy.http://www.bythom.com/sigma10to20.htm
Overall: As many of you have noticed, the 10-20mm Sigma replaced the 12-24mm Nikkor in my bag, and I've been shooting with it for quite some time now (almost two years). You're probably wondering why, as none of the performance points (other than autofocus, which I rarely use) are stellar with this lens. Well, they're not stellar with any other lens that goes that wide, either. Consider that we're at the FX equivalent of 15mm. That means you have to compare this lens at 10mm to a D3 using the 14mm Nikkor or perhaps the 14mm Sigma I've reviewed before. And you know what? When you come at it that way, you discover that the Sigma 10-20mm is about the best of the wide angle bunch for DX-framed cameras, and probably better than the FX frame options to date (I haven't tested the new Nikkor 14-24mm yet). Only the 10.5mm Nikkor fisheye goes wider, and it has more faults. The Nikkor 12-24mm is the clearly better lens at 20mm, but at 12mm I lean slightly towards the Sigma even though the test results would say the slight advantage is still Nikon's (plus, of course, I can go 2mm wider, which is significant for the DX frame). Vignetting and chromatic aberrations are easily dealt with in software these days, so it really boils down to corner sharpness at 10mm for me: is it good enough to be usable? And the answer is, yes, stopped down to f/8 or f/11. The center sharpness of the Sigma 10-20mm at 12mm is slightly better than the Nikkor 12-24mm, so there I have my answer: Sigma by a nose for my work.
But for your work the answer may be the opposite. If you need faster apertures or are shooting at the longer focal lengths much, the Nikkor is clearly a better choice.
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