The images produced by the lens are extremely sharp. The lens seems to produce pictures that are less warm and less color saturated than my Canon 300mm f/4 L.

This is an extremely sharp macro lens that is capable of 1:1 ratio. I use it to get close-up of flowers, insects, and other tiny objects. Some of the lens ...

Sigma APO 150-500mm F5-6.3 DG OS HSM is an ultra telephoto, high ratio, moderately fast zoom lens with focal length ranging from 150mm to 500mm, minimum ...

The Sigma 105mm f/2.8 EX macro has been my all-time favorite lens. It has the capability for me to explore tiny worlds around our environment, which we ...

A solid-built ultra wide-angle lens.

The Sigma 24-60mm F2.8 EX DG Lense is one of sigma's latest professional lens creations. Although simple in design, the overall lens offers a stunning array of ...

Sigma has been so proud to release the world's first ultra telephoto zoom lens, Sigma APO 200 to 500mm F2.8 EX DG, which gives the fastest aperture of F2.8 at ...

The auto-focus mechanism on this lens is based on Canon's micro motor. It is noisy and doesn't sound very smooth. In low-light and low-contract situation, it ...

Some thoughts on the Canon 75-300mm f/4-5.6 II USM lens. This lens is the second SLR lens I ever purchased. (The Sigma 28-80 is my first.) ...

An inexpensive, but so-so telephoto zoom lens.