The lens is very solid and sturdy, yet not very heavy. Focus ring has full throw, rather than the very short throws on zoom lens, which may be why AF is slow.

The lens is heavy. It is about as heavy as my Canon 300mm f/4 L lens. With massive lenses of this caliber, always support the camera and lens combination via ...

A solid-built ultra wide-angle lens.

Sigma APO 70-200mm F2.8 II EX DG MACRO HSM Won't Auto-Focus. Well I love the lens when it was working. Im at a soccer game yesterday shooting my two daughter.

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 ...

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 ...

The Sigma 28-105 is good for the money. It is a bit soft. I like using it for portrait and B&W photos. I like it with B/W because I do not like ...

Jun 3, 2007 · Does anyone know a way to format a 4Gb (Sandisk Ultra 2) SD card to work in a Nikon D50? It's too big for the camera and won't recognise it. I ...

so i was looking at these converters: quantaray 2x af tele-converter, sigma 2x tele-converter ex apo, and the canon extender ef 2x II. in that order because of ...

The Sigma 20mm f/1.8 D EX DG Aspherical Lens has a clutch-like system for switch between AF and MF modes. The system is very similar to the Sigma 105mm f/2.8 EX ...