Sigma EX 10-20mm f/3,5 DC HSM Specifications

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Name Sigma EX 10-20mm f/3,5 DC HSM

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Manufacturer Sigma
Release Date and Price
Release Year 2008
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Lens Type
Lens Type Wide Angle Zoom Lenses
Zoom or Prime Zoom lens (with the ability to zoom in and out)
Mount and Compatibility
Mount Canon (see compatible cameras)
Nikon (see compatible cameras)
Compatibility Designed for APS-C cameras (see compatible cameras)
Closest Focusing Distance 24 cm
Autofocus (AF) Yes
Built-in autofocus (AF) motor Yes (more info)
Maximum aperture f/3,5
Elements: 13 elements / 10 groups
Focal Range: 10-20 mm

This is a "DC" lens, designed for APS-C sensors, and will have a focal length equivalent to: 
On Canon cameras: 16-32 mm
On Nikon cameras: 15-30 mm

Read more on the cameras impact on the perceived focal length
Diameter 87 mm
Length 88 mm
Weight 520 g (see the total weight, camera+lens)
Image stabilization No
Filter Filter Thread, 82 mm
Lens Hood LH873-01 202 (included)
Tripod mount No (Read more)
Weather sealing No