Sigma announces stabilised 120-300mm F2.8 telezoom

Photokina 2010: Sigma has unveiled the 120-300mm f/2.8 EX DG OS HSM, a revised version of its fast telezoom featuring optical image stabilization and weather-resistant construction. The lens also offers ultrasonic-type HSM autofocus with full-time manual override, and employs both 'F' Low Dispersion and Super Low Dispersion glass to minimize chromatic aberrations. It employs a 9-bladed rounded diaphragm for attractive bokeh, and is fully compatible with Sigma's 1.4x and 2.0x teleconverters while maintaining autofocus.

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Large aperture telephoto zoom OS and weather resistant construction

Large aperture telephoto zoom lens Sigma’s proprietary Optical Stabilisation system Weather resistant sealing connectors Equipped with HSM ensuring quiet and high speed AF Rounded 9 blade diaphragm creates an attractive blur

The Sigma Corporation is pleased to announce the new Sigma APO 120-300mm F2.8 EX DG OS HSM, which offers improved optical performance. This large aperture zoom lens features Sigma’s OS (Optical Stabilizer) function and weather-resistant design throughout for use in harsh conditions. 

One SLD and Two FLD glass elements are used for maximum correction of chromatic aberrations. The Super Multi-Layer lens coating reduces flare and ghosting and the lens design incorporates an inner focusing and inner zooming system to ensure sharp images throughout the entire zoom range.

Improved optical performances provides excellent correction of sagittal coma flare and ensures ultra-high resolution, comparable to a fixed focal length lens.

The OS function offers the use of shutter speeds approximately 4 stops slower than would otherwise be possible and enables hand held tele-photography.

Incorporation of HSM (Hyper Sonic Motor) ensures quiet and high speed AF, while allowing full-time manual focus override. The rounded 9 blade diaphragm creates an attractive blur to the out of focus areas of the image.

The addition of the optional APO 1.4x EX DG and 2x EX DG Tele Converters produces an ultra telephoto zoom lens with AF.

35mm equivalent focal length (APS-C)• 180-450mm (1.5x)
• 190-480mm (1.6x)Lens Construction• 23 elements / 18 groups
• 2 FLD elements
• 1 SLD elementAF motor type• Ring-type Ultrasonic Motor
• Full-time manual focus Dimensions114.4 mm diameter x 289.2 mm length
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Sigma announces stabilised 120-300 mm F2.8 telezoom

Photokina 2010: has unveiled a Sigma 120-300 mm f/2.8 EX DG OS HSM, a revised version of its fast telezoom featuring optical image stabilization and weather-resistant construction. The lens also offers ultrasonic type HSM autofocus with continuous manual and function as ' F ' low dispersion and super low dispersion lens to minimize chromatic aberration. It uses nine-blade rounded diaphragm for attractive bokeh and fully compatible with 1 x and 2.4.0 x teleconverters Sigma while autofocus.

Go to:

Press release:

Large aperture telephoto zoom OS and weather-resistant construction Large aperture telephoto zoom lens Sigma property optical stabilization system, Weather resistant sealing connectors equipped with HSM, quiet and high-speed AF 9-blade rounded diaphragm creates attractive blur

The Sigma Corporation is pleased to announce the new Sigma APO 120-300 mm F2.8 EX DG OS HSM that offers improved optical performance is a large aperture zoom lens features a Sigma in operating system features (optical stabilizer), and weather-resistant design is designed for the toughest.

One and two FLD SLD glass elements are used to maximum correction of chromatic aberration Super multi-layer lens coating. reduces flare and ghosting and lens construction consists of an inner focusing and inner zooming system to ensure sharp images throughout the entire zoom range.

Improved optical properties provides excellent correction of sagittal coma flare and ultra-high resolution comparable to fixed focal length.

Features OS offers using shutter speeds of approximately 4 stops slower than would otherwise be possible and enables tele.ring miniature photos.

Incorporation of HSM (Hyper Sonic motor) ensures a safe and high speed, AF, allowing full manual focus override. rounded diaphragm creates attractive 9 blade blur the image areas.

Add an additional 1. APO EX DG 4 x and 2 x EX DG body of code produces ultra telephoto zoom lens with A.F.

35 mm equivalent focal length (APS-C) 180-450 mm (1.5 x)
• 190-480 mm (1.6 x) elements lens Construction • 23/18 groups
• 2 FLD element
• 1 SLD elementAF Motor type • ring type ultrasonic motor
• Continuous manual focus Dimensions114.4 mm diameter x Length 289.2 mm
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View the original article here