aZn137's reviews
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Sigma 17-70mm f/2.8-4 DC Macro OS HSM
8 out of 10 points and recommendedlarge aperture, fast focus, little CA, nice bokeh. good buildVERY apparent vignette, you can pretty much see it in every shotI like this lens overall, except for the fact that if you crank up your contrast, blacks and whites during PP, you can see the vignette at 4 corners. It's very easy to see that it appears in most pictures.
reviewed April 7th, 2010