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!!!!!!

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.

The Sigma 105mm F2.8 EX DG OS HSM Macro ($1,400 list) is a classic macro lens. It can be mounted to full-frame and APS-C cameras alike, although on the latter the field of view will be cropped by a 1.5x factor. It's available for Sigma, Canon, and Nikon cameras .

Minimal distortion; 1:1 magnification; Optical stabilization; Full-frame coverage

Soft wide open; Expensive

First, thanks to Adorama for the excellent and fast service to replace the defective lens.The replacement lens arrived as scheduled.The lens is heavy. It produces sharp images if it get at the correct focus as the autofocus was some kind like hunting.

Built quality; Nice Bokeh; Reasonable Price Saving; Rugged

Heavy; Poor in Low Light; Slow Focus

The 105mm f/2.8 EX DG OS HSM Macro Lens is Sigma's first macro lens to feature OS (Optical Stabilization) and replaces the Sigma 105mm f/2.8 EX DG Macro Lens . The Sigma 105 OS Macro lens has been in my kit for just over two years and has seen intermittently regular use.

The Sigma AF 105mm f/2.8 EX DG HSM OS macro is an impressive lens. The resolution is generally very high although the border quality could be a little better at large aperture settings. Typical for macro lenses distortions are a non-issue. Vignetting is only a real problem at f/2.8.

I've been shooting this lens for a few weeks and have pretty much left it on my second body (I was using a 50-200 or a 70-300 on it). Most people use it for macro but I really got it to extend the range of my Sigma 17-50 f/2.8 OS and it fills in beautifully for most things.

Great bokeh; fast lens; sharp

none

The Sigma lenses are becoming my favorite. That is a hard statement consider I am team Nikon everything. I had a Nikon macro and it worked okay, but the motor broke and I returned it. This gem was on sale ($400 off!) so I gave it a go. I am so glad I did! The clarity and Bokeh is amazing.

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.

I picked up this lens because I shoot a ton of macro work all year round and have been doing so with the 50mm version for over 4 years the only problem i was running into was how close i had to get to my subjects (I.E bugs, insects, ect.