The Sigma 70-200mm f/2.8 EX DG HSM II Macro Lens is shown mounted on a Canon EOS 40D DSLR in the above picture. The Sigma 70-200mm f/2.8 EX DG HSM II Macro Lens is available in a wide range of mounts including Canon (reviewed), Nikon, Sigma, Sony/Minolta, Pentax and Four Thirds.
Full disclosure: You should know that there are potential issues when using a lens made by a manufacturer other than the camera body manufacturer. Since Sigma reverse engineers (vs. licenses) manufacturer AF routines (except for their own bodies), the possibility exists that a new body might not support an older third party lens. Though not common, this has happened. Sometimes a lens can be rechipped to be made compatible, sometimes not. Again unusual is the situation where the lens and body manufacturers place fault on each other for a problem. To its advantage is Sigma USA's 4-year warranty - it is far superior to Canon's standard 1 year warranty. The risk is probably low, but you should figure this into your purchase decision.
I generally buy my lenses new/retail to mirror the experience everyone else should expect to have. Being 0 for 3 on this lens model, I can't in good faith recommend that anyone buy this one. This is a shame as this lens has potential to be a good one - and a very good value.
The focal length range and fast aperture are very useful features. They are excellent for portraits, sports, landscapes and other general-type shots including those taken in lower light levels. But at this point, I'd rather have the Tamron that at least autofocuses correctly some of the time and delivers better image quality at 200mm (we tend to use the extremes of our zoom lenses the most). And of course, the Canon 70-200 L versions are the best answer.
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