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Sigma 70-200 and 50-150 f/2.8 APO EX DG for Pentax and Sony

By dpreview staff on Jan 31, 2008 at 00:02 GMT

Pre-PMA 2008: Sigma has announced the launch of 70-200mm and 50-150mm constant f/2.8 lenses for Pentax and Sony owners wanting lovely bright, sensibly-priced telephoto zooms. Both are part of Sigma's premium EX range and include hypersonic focusing motors and apochromatic design.

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Press Release:

Announcement of two new lenses for Pentax* and Sony* fittings

The Sigma Corporation is pleased to announce the launch of the APO 70-200mm F2.8 II EX DG MACRO HSM large aperture telephoto zoom lens with a large aperture as well as APO 50-150mm F2.8 II EX DC HSM Compact, lightweight, large aperture telephoto zoom lens for Pentax and Sony fittings.

APO 70-200mm F2.8 II EX DG MACRO for Pentax and Sony

Large aperture zoom lens with advanced optical performance

This large aperture zoom lens has improved optical performance and retains close-up ability with a minimum focusing distance of 100cm/39.4in. SLD (Special Low Dispersion) and ELD (Extraordinary Low Dispersion) glass elements provide excellent correction for all types of aberrations. High image quality is assured throughout the entire zoom range. The super multi-layer coating reduces flare and ghosting. The lens design incorporates an inner focusing and inner zooming systems. The overall length of the lens does not change during focusing and zooming, ensuring convenient handling. It is possible to attach optional Sigma APO teleconverters.

APO 50-150mm F2.8 II EX DC HSM for Pentax and Sony

Compact, lightweight, large aperture telephoto zoom lens

This F2.8 large aperture telephoto zoom lens is designed exclusively for digital SLR cameras with APS-C size sensors and its compact, lightweight body provides freedom of movement and versatility. The super multi-layer lens coating reduce flare and ghosting and ensure sharp images throughout the entire zoom range. The addition of the optional 1.4x EX DG APO or 2x EX DG APO Tele Converters produce a 70-210mm F4 AF tele-zoom lens and a 100-300mm F5.6 AF ultra-telephoto zoom lens respectively.
*If the camera body does not support HSM motor, AF does not work.

Sigma lens specifications

Lens name APO 70-200mm F2.8 II EX DG MACRO HSM APO 50-150mm F2.8 II EX DG HSM
Focal length 70-200mm 50-150mm
Maximum aperture f/2.8 f/2.8
Minimum aperture f/22 f/22
Lens construction 15 groups 18 elements 14 groups 18 elements
Angle of view (APS-C crop) 22.8°-8.1° 31.7°-10.8°
Closest focus distance 100cm / 39.4in 100cm / 39.4in
Maximum reproduction ratio 1:3.5 1:5.3
Aperture blades 9 9
Filter attachment size 77 mm 67 mm
Focusing HSM motor with manual focus override HSM motor with manual focus override
Dimensions 86.5mm×189.8mm (3.4in × 7.5in) 76.5mm×139.7mm (3in × 5.5in)
Supplied accessories • Case
• Petal-type Hood (LH850-01)
• Tripod socket (TS-21)
• Case
• Petal-type Hood (LH732-01)

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