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Sigma announces the new APO 150-500mm F5-6.3 DG OS HSM for Sony and Pentax
Here is a summary or excerpt from an article that has just been published on DPNow:
This ultra-telephoto zoom lens covers a telephoto range up to 500mm and allows photographers to bring the subject close and short perspective. This lens has an equivalent field of view of a 225-750mm when used on digital SLR cameras with an APS-C size image sensor.
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This ultra-telephoto zoom lens covers a telephoto range up to 500mm and allows photographers to bring the subject close and short perspective. This lens has an equivalent field of view of a 225-750mm when used on digital SLR cameras with an APS-C size image sensor.
Click here to read the whole article...