The Sigma 50-150mm f/2.8 EX DC APO OS HSM is a new, stabilised version of the company’s large aperture telephoto zoom lens designed for digital SLR cameras with APS-C size sensors. The company claims that its proprietary Optical Stabiliser system enables hand held tele-photography by allowing the use of shutter speeds approximately 4 stops slower than would otherwise be possible. The lens also features a new optical formula comprising 21 elements in 15 groups, including 6 special low-dispersion elements (the previous version had 18 elements in 14 groups, including 4 SLD elements). The new version has a 77mm filter thread and a maximum magnification of 1:6.3, whereas the older variant took 67mm filters and had a maximum reproduction ratio of 1:5.3. The new lens inherits the HyperSonic Motor and nine-bladed diaphragm of its predecessor. Availability and pricing to be announced.

Sigma Press Release

50-150mm f/2.8 EX DC APO OS HSM

Compact, large aperture telephoto zoom lens with Optical Stabilisation

Compact, lightweight, large aperture telephoto zoom lens
Sigma’s proprietary Optical Stabilisation system
Rounded 9 blade aperture
HSM for fast and quiet autofocus
Compatible with Sigma EX DG APO Tele-Converters

The Sigma Corporation is pleased to announce the new Sigma 50-150mm F2.8 EX DC APO OS HSM, designed especially for digital SLRs with an APS-C size image sensor.

Sigma’s proprietary OS (Optical Stabiliser) system enables hand held tele-photography by allowing the use of shutter speeds approximately 4 stops slower than would otherwise be possible.

Six SLD glass elements compensate for chromatic aberrations and provide high image quality throughout the zoom range. The Super Multi-Layer Coating reduces flare and ghosting and ensures sharp and high contrast images even at the maximum apertures.

The lens design adopts an inner focusing and inner zooming system to provide convenient handling and the HSM (Hyper Sonic Motor) ensures quiet and high speed autofocus while allowing full-time manual focus override.

This lens has a minimum focusing distance of 80cm (31.5”) and a maximum magnification ratio of 1:6.3. The rounded 9 blade diaphragm creates an attractive blur to the out of focus areas of the image. The addition of Sigma’s TELE CONVERTER 1.4x EX DG APO or 2x EX DG APO produces a 70-210 F4 AF telephoto zoom lens or 100-300 F5.6 AF telephoto zoom respectively.

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