Title: Very good lens
Product review: I have Tokina 12-24mm and Sigma 10-20mm. I prefer Sigma for compact design, wide usability (HSM/AF-S) and wild 10mm focal length. Sigma provide slightly better sharpness than Tokina 12-24mm, but both are very good and hold the candle even against Nikon 50mm/1.8 prime lens and better than Nikon 18-200 kit lens. Although the prime lens have absolutely no CA, but both lens are good in CA department. Sigma's barrel distortion is too complex, so you would not be able to correct it fully during post processing. Tokina distortion could be corrected. Nice lens case included.If you own D40, D60 - it is your only choice (currently, in this price range), but it is a very good one.Thanks Sigma!!!
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