>> Recently I have acquired the Sigma 105mm f/2.8 EX >> macro lens (Canon EOS model). It is extremely well >> built. I enjoy using it very much. >I would be ...

They both offer zoom function in the 70mm to 200mm range, f/2.8 wide-open aperture for low-light work, and provide super-quiet auto-focus operation with ...

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 ...

Personally, I've encountered auto focus problems with my Sigma AF105mm macro lens ever since I've had it. I find that sometimes AF is completely redundant in ...

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 ...

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 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 ...

Nov 19, 2019 · That's a good question. In the past, you have the send the lens to Sigma to have the firmware updated. I don't know if there is anyway you can ...

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 ...

A solid-built ultra wide-angle lens.