Sigma 70 200mm f28 DG OS Lens for Canon EF

This high grade lens has optical image stabilisation, a wide maximum aperture and inner focus and zoom, for easy handling. An ideal telephoto zoom lens for the serious photographer.Large Aperture with Rounded DiaphragmThe maximum aperture of f2.8 on this 70 200mm lens gives extra light gathering power, useful in action photography or low light. The 9 rounded diaphragm blades also give a pleasing, natural appearance to out of focus areas – referred to as good “bokeh”.Optical Stabilisation OSThe image stabiliser in this lens compensates shake enough to allow an extra four stops lower exposure to be used. Two modes are selectable. These are for general photography or panning which is useful in say motorsports.Superb Optical QualityThe lens arrangement features the following for outstanding image qualityTwo FLD “F” Low Dispersion elements – matches the performance of fluorite lenses which correct secondary chromatic aberrations not achievable with ordinary optical glassThree SLD Super Low Dispersion elementsSuper Multi Layer coating to combat flare and ghosting at all focal lengthsHSM with Inner FocusThis lens is equipped with a Hyper Sonic Motor HSM for fast and quiet focusing. As focus and zooming are both internal mechanisms, the lens does not rotate or change size at all during focusing or zooming. In addition Full Time Manual Focus allows you to override the AF motor simply by twisting the focus barrel manually.Additional FeaturesCompact at just 197.6mm longCan attach Sigma APO teleconvertersHood Adapter supplied to make for better flare removal when using SLR bodies with APS C sized sensorsAdditional SpecificationsLens Construction 22 Elements in 17 GroupsAngle of View 34.3° 12.3°Diaphragm Blades 9 roundedMinimum Aperture f22Minimum Focus 140cmMax Macro Magnification 18