Sigma 70-200mm f/2.8 DG HSM II Macro Zoom Lens for Canon Digital SLR Cameras

This large aperture 70-200mm macro zoom lens offers an improved optical performance over earlier versions while retaining the same close-up ability (39.4 inches) and magnification range (1:3.5) as before. The lens--which is suitable for a range of applications, including portraits, landscape photos, and close-ups--offers two special-low-dispersion (SLD) and three extraordinary-low-dispersion (ELD) glass elements. The elements combine to provide excellent correction for all types of aberrations, ensuring high image quality throughout the entire zoom range. The lens also incorporates a Hyper Sonic Motor (HSM), which supports a quiet, high-speed autofocus system as well as full-time manual focusing. Other features include a super multilayer coating that reduces flare and ghosting, inner focusing and inner zooming systems that preserve the overall length of the lens while shooting to ensure convenient handling, and a removable tripod collar. All Sigma lenses carry a one-year warranty.

Technical Details :
* Super multi-layer lens coating and lens design reduces flare and ghost.
* 70-200mm Focal Length.
* Lens Construction - 18 Elements in 15 Groups.
* 34.3 - 12.3 degrees angle-of-view.
* Minimum focusing distance of 100cm, maximum magnification of 1 - 3.5.



Specifications :
* Focal length: 70 to 200mm
* Maximum aperture: f/2.8
* Minimum aperture: f/22
* Lens construction: 18 elements in 15 groups
* Angle of view: 34.3 to 12.3 degrees
* Number of diaphragm blades: 9
* Minimum focusing distance: 39.4 inches
* Maximum magnification: 1:3.5
* Filter size: 77mm
* Hood: Petal type
* Corresponding AF mounts: Canon
* Dimensions: 3.4 inches in diameter and 7.3 inches long
* Weight: 48.3 ounces
* Warranty: 1 year

Customer Feedback :
I LOVE this lens. I got it for shooting sporting events for my university newspaper, and have had no problems in the month that I've had it. It autofocuses faster than the Tamron. A monopod isn't necessary because it's such a fast lens. Even at night with stadium lighting, the AF has little trouble.
The best thing I've heard for people wanting to shoot sports since buying this "cheap copy" lens came from a professional on the sidelines the firtst time I used my new lens. He said to my question about the Nikon 70-200mm, "Honestly, I turn the VR off when I'm not doing still portrait shots because it gets out of whack when I start following a moving person."