Sigma 70 200mm f 2.8 dg apo hsm os %28for canon%29

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Sigma 70-200mm f/2.8 DG APO HSM OS for Canon

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The Sigma 70-200mm f/2.8 DG APO HSM OS for Canon

The 70-200 f/2.8 OS has an HSM motor for quick autofocus, three Extra Low and two Special Low dispersion elements to reduce chromatic aberrations, and coatings to reduce flare and ghosting. It adds an Optical Stabilization unit rated for four stops of stabilization. It doesn’t focus quite as closely as the non-OS version, so it can’t get quite the magnification of that lens on close-ups.

Roger's Take

Some people don’t realize this is a completely different lens than the older Sigma 70-200, not just the old lens with an Optical Stabilizer added. The OS version is clearly sharper at 200mm than the old one was, but maybe not quite as sharp at 70mm. Overall, though, it is clearly an improvement.

If you’re expecting it to be indistinguishable from a Canon 70-200 f/2.8 IS II, then you aren’t going to be pleased — it can come close to matching it in the center, but not in the edges and corners, at least not at f/2.8. But it’s an excellent lens at a reasonable price. It also autofocuses quickly and accurately enough to be used for sports photography. It’s sharp in the center even wide open all the way to 200mm, although the edges won’t sharpen until f/4 and improve further at f/5.6. And the image stabilization is very good. I’d call it three stops, which is not quite up to the Canon 70-200 f/2.8 IS II, but better than the original Canon 70-200 IS.

For most people who will use this lens for sports shooting, the corner and edge softness won’t be an issue. Depending on how you shoot, it may be a great way to save some money compared to the Canon version, but for others its weaknesses may be an issue. One thing I will add, though: this lens is NOT 200mm focal length. It’s 180mm or so at the long end, noticeably shorter than the previous Sigma 70-200 or any of the Canon 70-200 lenses. If that’s important to you and you really need every bit of 200mm, this may not be the lens for you.

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