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Ilse Jurriën : 2011-02-10 22:00:00
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Sigma Macro 105mm F2.8 EX DG OS HSM lens : Sigma announces the new Sigma Macro 105mm F2.8 EX DG OS HSM lens. This large aperture medium telephoto macro lens offers advanced performance of close-up photography. Sigma’s own proprietary OS (Optical Stabilizer) system enables handheld close-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 on the Sigma Macro 105mm lens 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.
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Ilse Jurriën : 2011-02-10 21:55:00
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Sigma APO 50-150mm F2.8 EX DC OS HSM lens : Sigma announces the new Sigma APO 50-150mm F2.8 EX DC OS HSM lens, designed especially for APS-C size image sensors. Sigma’s proprietary OS (Optical Stabilizer) system offers the use of shutter speeds approximately 4 stops slower than would otherwise be possible, enabling hand held tele-photography. The Sigma 50-150mm lens offers six SLD glass elements to compensate for chromatic aberrations and provide high image quality throughout the zoom range. The Super Multi-Layer Coating of the Sigma APO 50-150mm reduces flare and ghosting and ensures sharp and high contrast images even at the maximum apertures.
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Ilse Jurriën : 2011-02-10 21:50:00
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Sigma APO 120-300mm F2.8 EX DG OS HSM lens : Sigma announces the new Sigma APO 120-300mm F2.8 EX DG OS HSM lens. This new Sigma lens incorporates Sigma’s proprietary Optical Stabilizer system, and offers high image quality. In addition, the Sigma APO 120-300mm lens features splash proof design for use in harsh conditions. One SLD and two FLD glass elements are used for maximum correction of chromatic aberrations. The Super Multi-Layer 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 performance provides excellent correction of sagittal coma flare, and ensures ultra-high resolution, comparable to a fixed focal length lens.
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