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Sigma APO 70-200mm F2.8 EX DG HSM lens launched
Mark Peters : May 23th 2005 - 08:00 CET
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SigmaSigma APO 70-200mm F2.8 EX DG HSM lens launched : Sigma Corporation is pleased to announce the launch of the new APO 70-200mm F2.8 EX DG HSM lens. This telephoto zoom lens has a large maximum aperture of f2.8 which remains constant throughout the zoom range and it is optimised for digital SLR cameras. Two pieces of SLD (the special low dispersion) glass in the front lens group and another two in the rear group offer excellent correction of chromatic aberration. High optical performance is demonstrated throughout the entire zoom range. The new multi layer lens coating and lens design reduce flare and ghost, which is a common problem with digital cameras and also creates an optimum color balance.
Sigma APO 70-200mm F2.8 EX DG HSM lens launchedSigma 70-200mm lens - HSM
An inner focusing system eliminates front lens rotation, making the lens particularly suitable for using the petal-type lens hood supplied and circular polarising filters. Since focusing and zooming do not change its overall length, ease of handling and operation is assured. A rotating tripod mount can be conveniently detached if required. The Hyper Sonic Motor (HSM) ensures a silent, high-speed AF function as well as full-time manual focusing capability for Sigma, Canon, and Nikon-D mount lenses.

Sigma 70-200mm F2.8 EX DG HSM lens - APO tele converter
The new and fast maximum aperture telephoto lens is optimised for digital SLR cameras. The lens can be used with the 1.4x EX or 2.0x EX Apo Tele Converters (optional), becoming a 98-280mm F4 Autofocus telephoto zoom lens or a 140-400mm F5.6 Autofocus telephoto zoom lens respectively. And with the Four Special Low Dispersion (SLD) glass elements produce excellent image quality throughout the entire zoom range.

Sigma APO 70-200mm lens - Specifications
• Focal Length: 70-200mm
• Minimum Aperture: F32
• Lens Construction: 17 Elements in 14 Groups
• Angle of View: 34.3°- 12.3°
• Number of Diaphragm Blades: 9pcs
• Minimum Focusing Distance: 180cm(70.8”)
• Maximum Magnification: 1:7.8Filter Size: 77mm
• Lens Hood: Petal Hood
• Dimensions: Diameter 86.2mm (3.3”) x Length 184mm (7.2”)
• Weight: 1270gr/44.7oz
• Fittings: Sigma, Canon, Nikon-D, Konica/Minolta and Pentax
• SRP: £799.99

   Sigma 50-500mm F4-6.3 EX DG HSM lens
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