Sigma 8-16mm F4.5-5.6 DS HSM

The Sigma 8-16mm F4.5-5.6 DS HSM is one of the widest zoom lenses available for APS-C camera systems. It's not the sharpest or fastest optic in the world, but will satisfy the needs of shooters who are seeking a uniquely wide perspective.

Sigma 8-16mm F4.5-5.6 DS HSM : Lens

The Sigma 8-16mm F4.5-5.6 DS HSM ($1,100 list) is a lens that either speaks directly to your soul or you find nearly impossible to use effectively.

Sigma 8-16mm F4.5-5.6 DS HSM : Postered Wall

The lens itself is fairly large, which is not uncommon for wide-angle designs. It's 4.2 by 3 inches (HD) in size and weighs a hefty 1.2 pounds.

Sigma 8-16mm F4.5-5.6 DS HSM : Tattered Poster

The lens does its best in terms of sharpness at 16mm, where it already resolves more than 2,000 lines at its widest f/5.6 setting. Distortion switches from barrel to 1.4 percent of the pincushion variety.

Sigma 8-16mm F4.5-5.6 DS HSM : Red Barn

At the widest focal length and f/4.5 aperture it scores 1,572 lines per picture height of sharpness, well shy of the 1,800 required for a sharp image.

Sigma 8-16mm F4.5-5.6 DS HSM : Staples

If you're a wide shooter and understand the limitations of this lens, it can be quite rewarding. Landscape shooters and others with the skills to put it to effective use will be rewarded by the unique point of view that it provides.