Personally, I feel the lens is very sharp, as indicated on Photodo. I tested the lens out on some portraits shots and found the resulting photos to be way too ...

Being a macro lens, I use it in manual focus mode most of the time anyway, especially for 1:1 (one-to-one) magnification. I managed to continue using it for ...

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 ...

I find that sometimes AF is completely redundant in situations without bright illumination or strong contrast and I have to use manual focus. Even manual ...

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 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.

Some thoughts on the Sigma 28-105mm f/2.8-4 zoom lens ... 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 ...

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 ...