2011年7月23日星期六

50 mm Sigma lens

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Dennis HissinkTuesday, September 23, 2008
Posted by: Dennis Hissink

Tits goal of large aperture medium telephoto lens is offering the equivalent of 100 mm angle of view on four thirds cameras. The optimum optical design and molded glass elements provide excellent aspherical lens aberration correction a coma. Ensures superior peripheral brightness and provides sharp, high contrast even at maximum aperture. The Super Multi layer coating reduces flare and ghosting. Superior optical performance are ensured throughout the range of focus. Rounded Diaphragm Blades 9 creates a blur. This lens incorporates HSM (hyper Sonic Motor) ensures a quiet and high-speed AF as well as the focus of full-time manual ability.

Sigma 50mm lens

Sigma 50 mm lens specifications
Lens construction: 8 groups, 6 elements
Viewing angle: 24.4 degrees
Number of blades: 9pcs
Minimum aperture: F16
Minimum focus distance: 45 cm/17.7 in
Maximum magnification: 1: 7.4
Filter size: φ77mm
Lens Hood Petal-type Hood:
Size: 73.7 mm φ 84.5 mm/3.3 x 2.9 in
Weight: 530 g 18.7 oz
Lens Hood LH829-01
Accessories: Sigma DG UV 77 mm
Accessories Sigma DG Wide Circular PL 77 mm


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