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Originally Posted by ntinlizi
just did some research..that really is a huge price difference! i was under the impression that the 10-22mm was only like $500, but its about $700! and the Sigma is around $430! i will deffinately be looking at the sigma in the future! thanks
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Yes it's significantly cheaper! As I mentioned, the trade-off's with this particular lens are minimal for most photographers. Both Sigma and Tamron made some decent quality and affordable glass, they tend to make less expensive versions of popular Canon and Nikon lenses. OTOH, I would be careful to make sure I did some research first on a particular lens before purchasing, quality from 3rd party manufacturers can vary significantly... eg: you get what you pay for. There are several websites and photographers who review all sorts of lenses, I've even seen sites which will give you actual graphs of the image quality characteristics (blur, CA, vignetting, etc) of the lens at various focal lengths and apertures. Lots of information out there if you have the time to sort through it!