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Sigma APO 300-800mm F5.6 EX IF HSM added to range

Sigma APO 300-800mm F5.6 EX IF HSM added to range - A 300mm telephoto to 800mm ultra-telephoto zoom lens featuring a constant large aperture through its entire range.

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Category : Interchangeable Lenses
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Whilst Sigma's Digital Division has been busy developing the ground breaking SD-9 digital SLR, their analogue design team has been busy burning the midnight oil.

APO 300-800mm F5.6 EX IF HSM
APO 300-800mm F5.6 EX IF HSMA 300mm telephoto to 800mm ultra-telephoto zoom lens featuring a constant large aperture through its entire range.

Sigma APO 300-800mm F5.6 EX IF HSM provides a constant F-number from 300mm telephoto to 800mm ultra-telephoto. This super-telephoto zoom lens has a horizontal angle of view of 6.9at 300mm and 2.6at 800mm. Its ability to zoom from a fixed position offers unparalleled versatility in composing an image. It incorporates two pieces ELD (Extraordinary Low Dispersion) glass in the front for effective compensation of chromatic aberration. Since focusing and zooming do not change its overall length, this lens offers ease of handling and operation. The HSM ensures a quiet, high-speed AF function as well as full-time manual focusing capability for Sigma, Canon, Nikon mount lenses. A 46mm filter can be inserted near the rear of the lens, and a circular polarizing filter can be used. When this lens is used with the 1.4x EX or 2x EX Apo Tele Converters (optional), it becomes a 420-1120mmF8 MF lens or a 600-1600mm F11 MF lens respectively. The lens materials used in this new lens are lead and arsenic free ecological glass.

THE SPECIFICATIONS
Focal Length : 300-800mm
Maximum Aperture : F5.6
Lens Construction :18 Elements in 16 Groups
Focusing System :Internal Focusing
Angle of View : 8.2- 3.1
Number of Diagram Blades :9
Minimum Aperture :32
Minimum Focusing Distance :600
Maximum Magnification :1:6.9
Filter Size :46 (Rear)
Lens Hood :Bayonet
Dimensions :Diameter165.5mm/6.5" X Length 541.5mm/21.31"
Mounts (AF) : Sigma, Canon, Nikon (D)

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