The general-purpose zoom lens costs about $100 more than Canon's equivalent, but Sigma thinks its image quality means the lens is worth the extra money. Stephen Shankland worked at CNET from 1998 to ...

The new Sigma 24-105mm F4 DG OS HSM offers a versatile focal range whilst being tack-sharp from 24mm to 80mm, particularly in the centre of the frame. Sharpness at 105mm isn't quite as good, or at the ...

The Sigma 24-105mm F4 DG OS HSM is the standard zoom lens from the Sigma "Art" line, offering stable and fine image quality from wide to mid-telephoto range.

The Sigma 24-105mm ƒ/4 DG OS HSM “A” is a high-performance, full-frame, Art-series lens with a constant ƒ/4 aperture and Optical Stabilizer I.S. system, and competes directly against the Canon ...