This is a wonderful macro lens that rivals the Nikon and Canon big guns for sharpness. Great value and the built in optical stabilizer is perfect when using it as a portrait lens, which it also excels at.

Wanted to get a macro lens to complete my equipment setup, after looking around the Sigma looked like one of the best to try. The 105mm focal length means to don't have to get too close to anything which might be scared off e.g. insects and so far the lens has produced excellent results.

Consistent Output; Sharp Focus; Strong Construction

Very Loud Os

I recommend this lens as an excellent macro, not as a tele. As any younger Sigma it needs service to be adjusted individually to one's camera. Therefore it has to be sent to Sigma together with the camera. They will fine-tune the lens within one week without charge.

Superb macro lens for a very; very attractive price; fast and accurate AF in macro range; optical stabilization

Needs service befor used for the first time; no aperture ring; AF has some weekness when used as normal tele (not as macro

If I could give this no stars I would!!!!! After receiving this lens from overstock I quickly realized it was a grey market lens and that I couldn't even register for the warranty because it's for another country and I can't even read the language!!!!!!

v.good

Great lens for macro but not for portraits what i have observed is that it struggles a little in auto focus also the optical stabilisation is bit noisy. Plus the lens is not weather sealed Sharpness is less than that of the canon.

Sigma 105mm F2.8 EX DG OS HSM is a Fixed aperture Auto Focus (AF) Macro Prime lens with Optical Image stabilization and 35mm FF max sensor coverage, and it is designed to be used with SA Mount cameras. What type of photography is the Sigma 105mm F2.8 EX DG OS HSM lens good for?

Optical Image Stabilization, Weather-sealed, Autofocus, Distance Scale, Hood supplied, Full-time Manual Focusing, Focus Distance Limiter, Covers Full-Frame Sensor, 9 Diaphragm Blades for Smooth Bokeh, High Max Magnification ratio of, 1x

Optical Image Stabilization, Weather-sealed, Autofocus, Distance Scale, Hood supplied, Full-time Manual Focusing, Focus Distance Limiter, Covers Full-Frame Sensor, 9 Diaphragm Blades for Smooth Bokeh, High Max Magnification ratio of, 1x

Super sharp!! Great lens all around. It does have a clunking sound when the lens is off the camera body but this is normal and does not mean the OS is broken.

This large aperture medium telephoto macro lens offers advanced performance of close-up photography. Sigma's own proprietary OS (Optical Stabilizer) system enables handheld close-up photography.

It felt so cheap in comparison to my Nikkor lenses. I was trying to avoid spending an extra money to get the Nikon 105 micro and this lens is just not worth it.