Sigma 70-200mm f/2.8 EX 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 four-year warranty.SpecificationsFocal length: 70 to 200mmMaximum aperture: f/2.8Minimum aperture: f/22Lens construction: 18 elements in 15 groupsAngle of view: 34.3 to 12.3 degreesNumber of diaphragm blades: 9Minimum focusing distance: 39.4 inchesMaximum magnification: 1:3.5Filter size: 77mmHood: Petal typeCorresponding AF mounts: CanonDimensions: 3.4 inches in diameter and 7.3 inches longWeight: 48.3 ouncesWarranty: 4 year