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Sigma announces the APO 70-200 F2.8 EX DG OS HSM lens. This large aperture zoom lens incorporates Sigma's Optical Stabilizer function, offering the use of shutter speeds approx. 4 stops slower than would otherwise be possible. For Sony and Pentax mount, the built-in OS function of this lens can be used even if the camera body is equipped with an image sensor shift anti-shake system. As compensation for camera shake is visible in the view finder, you can easily check for accurate focus and ensure there is no subject movement...
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