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Sigma 28-70mm f2.8 EX Aspherical 35mm Zoom

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  • Camera Format35 mm SLR
    Lens TypeZoom Lens
    Focal Length28mm - 70mm
    Lens Max Aperturef/2.8
    Min Aperturef/32
    Focus TypeAutofocus
    Macro LensWithout Macro Lens
    Closest Focusing Distance15.7 in
    Picture Angle34.3 - 75.4 degrees
    Attachment / Filter Size77 mm
    Groups / Elements15 Elements in 12 Groups
    Diameter3.3 in
    Length4 in
    Weight22.7 oz
    Product ID20825961

Product Description

SIGMA 28-70mm f2.8 EX Aspherical DF is one of several EX-Series lenses. It combines a fast, constant f2.8 maximum aperture with a popular range of focal lengths from 28mm wide-angle to 70mm medium range telephoto with an upgraded design. It is the worlds smallest 28-70mm f2.8 zoom lens. The lens also incorporates a dual focus mechanism. It is easy to hold the lens, since the focusing ring does not rotate during auto-focusing and yet provides adequate focusing torque of the focusing ring during manual focusing of the lens. Helical focus system of the lens eliminates front lens rotation, thus allowing the use of a Perfect Hood and easy to use polarizing filters. It incorporates 2 aspherical lenses in the front and rear lens groups, provides high performance and superior optical quality. Minimum focusing distance is 40cm/15.7inches at all focal lengths. Sigma 28-70mm f2.8 EX Aspherical DF is equipped with a Perfect Hood to prevent extraneous harmful light for image quality. The lens materials used in this new le

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