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Sigma releases the new APO 150-500mm F5-6.3 DG OS HSM lens for Sony and Pentax mounts. The lens has an equivalent field of view of a 225-750mm when used on digital SLR cameras with an APS-C size image sensor. Sigma's original OS (Optical Stabilizer) function offers the use of shutter speeds approximately 4 stops slower. This lens is equipped with a rear focus system that minimizes fluctuation of aberration caused by focusing. It is ideal for sports, wildlife and landscape photography with handheld shooting...
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