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Sigma announce APO 50-150 mm F2.8 DC lens

Aug 11, 2006 at 07:15 GMT

Sigma has today announced a very interesting sounding lens, the new APO 50-150 mm F2.8 EX DC HSM. This lens promises to be compact (its DC notation means its designed for an APS-C size imaging circle) and fast (an F2.8 maximum aperture) with a good telephoto zoom range, HSM focusing motor and four SLD (Low Dispersion) glass elements to reduce chromatic aberrations. This lens on a 1.5x crop digital SLR (such as the Nikon D80) would provide an equivalent FOV of 75 to 225 mm.

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Press Release:

APO 50-150mm F2.8 EX DC HSM

Compact, lightweight, large aperture telephoto zoom lens designed exclusively for digital SLR cameras and incorporating the very latest optical technology.

The Sigma Corporation is pleased to announce the launch of the new APO 50-150mm F2.8 EX DC HSM lens.

Specially designed for digital SLR cameras with an APS-C size image sensor, this large aperture F2.8 lens has a compact and lightweight construction of 76.3mm (3.0”) in diameter, 132.6mm (5.2”) in length and weighing just 780g (27.5oz) (Nikon Mount).

The incorporation of the very latest optical technology gives optimum lens performance providing excellent correction for flare, ghosting and all types of aberrations. High image quality is assured throughout the entire zoom range. Four SLD(Special Low Dispersion)glass elements are used for utmost correction of chromatic aberrations.

The HSM (Hyper Sonic Motor) system ensures quiet and high-speed auto focusing with full time manual focus override.

The addition of the 1.4x EX DG APO or 2x EX DG APO Tele Converters (optional extras) produces a 70-210mm F4 AF tele-zoom lens and a 100-300mm F5.6 AF ultra-telephoto zoom lens respectively.

APO 50-150mm F2.8 EX DC HSM specifications

Focal length 50 - 150 mm
Maximum aperture F2.8 (throughout the zoom range)
Minimum aperture F22
Lens constructions 18 Elements in 14 groups
Angle of view 27.9° - 9.5°
Number of diaphragm blades 9 pieces
Minimum focusing distance 1 m (3.3 ft)
Maximum magnification 1:5.3
Filter size 67 mm
Lens hood Bayonet type
Dimensions 76 mm x 135 mm (3.0 x 5.3 in)
Weight 770 g (1.7 lb)