2011年7月20日星期三

Sigma APO 300-800 mm HSM lens

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Ilse JurrienTuesday, September 26, 2006
Posted by: Ilse Jurrien

SAjmah has launched a new system of four-thirds compatible, ultra zoom lens large aperture; Sigma APO 300-800 mm f 5.6 EX DG HSM. This Sigma lens covers the field of view equivalent to 600 mm to 1600 mm when used on four thirds cameras. Continuously varying the angle of view, the lens takes a lot of movement of the feet out of the composition of photos. The latest technology of coating lens and lens design reduce flare and ghosting, a common problem with digital cameras. Two ELD glass elements in the front lens group reduces chromatic aberration to a minimum and also ensures optimal image quality. The total length of the lens does not change during focusing and zooming, ensuring convenient handling.

Sigma APO 300-800mm lens

Lens Sigma APO 300-800 mm f 5.6 EX DG HSM
HSM offers ultra quiet, high-speed auto focus as well as override manual focusing full time. This lens is designed to accept a 46 mm circular polarizer filter in a filter back support. The introduction of this new lens increases the line-up of Sigma lens for four thirds mount for a total of eleven models. With four thirds cameras, the focal length will be equivalent to 600-1600 mm.

Sigma DG HSM lens-specific
Type of Mount: four thirds
Minimum Aperture: F22
Lens construction: 16 elements in 18 groups
Viewing angle: 4.1-1.5
Number of Diaphragm Blades: 9pcs
Minimum focusing distance: 600cm (236.2)
Maximum magnification: 1: 6.9
Filter size: 46 mm (rear)
Lens Hood bayonet type:
Size: 156.5 mm (6.2) X length mm 549.4 (21.6)
Weight: 5915g/208.6 oz
No UPC: 0085126 595586


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