One more from the Sigma Corporation, which again offers a stable telephoto zoom lens for digital SLR with APS-C F2.8 50-150mm f/2.8 EX APO DC OS HSM, which provides a quick release and is equivalent to 75-225mm on a 35mm system. However, this lens comes with a design that is more compact and lighter than full frame design 70-200mm F2.8.
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| Sigma F2.8 50-150mm EX DC HSM APO OS |
Sigma 50-150mm F2.8 EX DC HSM APO OS, equipped with a version, OS' that is claimed to offer the ability to get a stable picture, the shutter speeds four stops slower. In addition, this lens is also equipped with several new features with 21 elements in 15 groups. The advantages of this Sigma lens are a compact design, lightweight telephoto zoom function with large openings.
In addition, there are also features optical stabilization system, Rounded 9 blade aperture, and the release of HSM for fast and quiet autofocus. Optical Stabilizer system allows hand held telephoto by allowing the use of shutter speeds approximately four stops slower. Six elements of SLD, with colored glass compensate for distortion and provide high image quality throughout the zoom range. Super Multi-Layer Coating reduces flare and ghosting to ensure sharp images and high contrast even at maximum hole.
In the design, this lens adopted an inner focus and zooming system to provide comfortable handling. This lens has minimum focus distance of 80cm and maximum magnification ratio of 1:6.3. According to the plan, telephoto zoom lens will be available in April 2011.
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