Sigma 150mm f/2.8 EX DG HSM APO HSM IF Macro Lens for Nikon SLR Cameras

Sigma 150mm f/2.8 EX DG HSM APO HSM IF Macro Lens for…

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The first high speed, tele macro lens for Nikon digital and film SLR cameras -- shoot up to 1:1. The maximum lens aperture is F2.8. Two Special Low Dispersion (SLD) glass elements control various color aberrations and assure high image quality. A floating focusing system moves two different lens groups in the optical system to different positions. This system compensates for astigmatic aberration and spherical aberration. And, the high-speed motor (HSM) provides ultra quiet high-speed autofocusing as well as full-time manual focus override. Specifications: Focal length: 150mm Minimum Aperture: F22 Lens Construction: 16 Elements in 12 Groups Focusing System: Floating Internal Focusing Angle of View: 16.4deg. Number of Diaphragm Blades: 9pcs Minimum Focusing Distance: 38cm (15 ) Maximum Magnification: 1:1 Filter Size (diameter): 72mm Lens Hood: Petal shape bayonet Dimensions: Diameter 79.6mm (3.1 ), Length 137mm (5.4 ) Weight: 895g (31.6 oz.) Detachable tripod socket