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The Sigma 105mm f/2.8 EX DG OS HSM is an optically stabilised true macro lens with a reproduction ratio of 1:1. Featuring a Super Multi-layer Coating to reduce flare and ghosting, a HyperSonic Motor (HSM) for quiet auto focus and Sigma’s own Optical Stabiliser to combat motion blur resulting from shaky hands, the new lens is the successor to the Sigma Macro 105mm F2.8 EX DG, which was launched in June 2004. The new lens also boasts nine rounded diaphragm blades for pleasing bokeh and a splashproof construction for problem-free outdoor use. Pricing and availability to be announced.
Sigma Press Release
105mm f/2.8 EX DG OS HSM
Medium telephoto macro lens incorporating Sigma’s Optical Stabiliser
Large aperture medium telephoto macro lens
Sigma’s proprietary Optical Stabilisation system
1:1 Maximum reproduction ratio
Rounded 9 blade diaphragm creates an attractive blur
Splash proof design
The Sigma Corporation is pleased to announce the Sigma MACRO 105mm F2.8 EX DG OS HSM.
The successor to the Sigma MACRO 105mm F2.8 EX DG, introduced to market in June 2004, this large aperture medium telephoto macro lens incorporates the latest optical design technology, offering advanced performance for cloase-up photography. A Special Low Dispersion (SLD) lens and one high refractive index SLD lens provide excellent correction for all types of aberration and distortion.
A floating focusing system moves two different lens groups in the optical path to different positions. This system compensates for astigmatic aberration and spherical aberration and provides extremely high optical performance from infinity to 1:1 Macro.
The Super Multi-Layer Coating reduces flare and ghosting, providing high contrast images. It is also possible to use this lens with Sigma’s optional APO Tele Converters. Sigma’s own proprietary OS (Optical Stabiliser) function helps with handheld close-up photography and the HSM (Hyper Sonic Motor) ensures quiet and high speed autofocus as well as full-time manual focus capability.
This lens features a splash resistant design for use in harsh conditions and a rounded 9 blade diaphragm creating a smooth blur to the out of focus areas of the image.