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Details of Sigma groundbreaking 12-24mm f/4.5-5.6 EX DG zoom lens

Details of Sigma groundbreaking 12-24mm f/4.5-5.6 EX DG zoom lens - First Zoom lens that has 122diagonal angle of view at 12mm focal length!

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Category : Interchangeable Lenses
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Sigma have announced the 12-24mm f/4.5-5.6 EX DG Aspherical/HSM.
The large angle of view (122super wide angle of view at 12mm along the diagonal axis) is ideal for shootings indoor as well as landscape photography. It has a variable angle of view from 122 to 84.1. Four Special Low Dispersion (SLD) glass elements are provided for effective compensation of colour aberration, which is a common problem with super-wide angle lenses. Two pieces of Glass Mold and one-piece hybrid aspherical lenses offer excellent correction for distortion as well as all types of aberration. By effective arrangement of lens elements and advanced technology this lens has super compact dimensions of 100mm full-length, and 87mm maximum diameter.

The lens is equipped with an Inner focusing system that will keep the length of the lens unchanged while controlling aberration. The models, which are equipped with HSM (Hyper Sonic Motor) system offer Full Time Manual Focusing. It has a minimum focusing distance of 28mm at all focal lengths. This lens is equipped with an integral petal-type hood to block out extraneous light.

Details of Sigma groundbreaking 12-24mm f/4.5-5.6 EX DG zoom lens

Specifications

Focal Length 12-24mm
Minimum Aperture : F22
Lens Construction 16 Elements in 12Groups
Focusing System Inner Focusing
Angle of View 122.0-84.1
Number of Diaphragm Blades 6
Minimum Focusing Distance 28cm (11")
Maximum Magnification 1:7.1
Filter Size Rear Type (Gelatin Filter)
Lens Hood Fixed Type Petal Hood
Dimensions Diameter 87mm (3.4")X Length 100mm (3.9")
Mounts (AF) Sigma, Canon, Nikon (D), Minolta (D), Pentax
Weight 615gr/21.6ounces

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