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Sigma 20-40mm f/2.8 EX DG DF for AF 35mm Zoom

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MSRP : $476.00

  • Camera Format35 mm SLR
    Lens TypeZoom Lens
    Focal Length20mm - 40mm
    Lens Max Aperturef/2.8
    Min Aperturef/32
    Focus TypeAutofocus
    Macro LensWithout Macro Lens
    Closest Focusing Distance11.8 in
    Picture Angle56.8 - 94.5 degrees
    Attachment / Filter Size82 mm
    Groups / Elements17 Elements in 13 Groups
    Diameter3.5 in
    Length4.2 in
    Weight20.96 oz
    Product ID20724498

Product Description

Sigmas new 20-40mm f/2.8 EX Aspherical DF lens combines a constant f/2.8 maximum aperture with ultrawide-to-wide focal lengths in a new design which is easier to handhold. The lens incorporates a "Dual Focus" mechanism, which makes the focus ring stay stationary during autofocusing. Unlike most other autofocus lenses, torque of the focusing ring during manual focus remains excellent. A helical focus system eliminates front lens rotation.

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