Sigma 18-50mm F2.8-4.5 DC OS HSM

Announced Mar 3, 2009 •
Zoom lens | Canon EF, Pentax KAF3, Sony Alpha, Sigma SA, Nikon F (DX)
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Review of Sigma 18-50mm f/2.8-4.5 DC OS HSM
By: SLR Gear

The Sigma performed well in our tests, with good results for sharpness wide open, and even better when stopped down to just ƒ/4. CA is a bit high at 18mm and distortion is a complicated mix of barrel and pincushion, but nothing overly objectionable.

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