Sigma AF 17-70mm f/2.8-4.5 DC (Nikon) Review

Photozone.de has an excellent review on the Sigma AF 17-70mm f/2.8-4.5 DC lens which is one of many standard zooms available for Nikon DSLR users. Compared to the rest of the gang it offers a relatively long zoom range (~ 4 x ratios) combined with a relatively large max. aperture at 17mm.

They write: "The Sigma AF 17-70mm f/2.8-4.5 DC is a very good standard zoom and a viable alternative to the Nikon offerings in this range. Generally it is capable to produce very sharp results although the corner performance leaves a bit to be desired at 17mm at large aperture settings. The vignetting level could also be a bit better here but most competitors don't offer an f/2.8 settings anyway and from f/4 it follows the mainstream. The level of distortions is about typical for a standard zoom whereas chromatic aberrations (color shadows) are comparatively low. The build quality is very fine for a lens in this price league."



Source