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Sigma’s USB Dock for Lenses Will be Released This Month

Sigma first unveiled its innovative USB dock at Photokina last year. Consequently, many professionals have been rather curious at how the device will work. For $60, the gadget allows people to connect their lens to the computer through USB connection. They can perform micro adjustments to the autofocus feature as a way to tweak the […]
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Sigma 2x EX DG Tele Converter Review

The Sigma 2x EX DG Tele Converter is intended for Canon cameras only. The TC allows photographers to maintain AF throughout the whole range of focal lengths as advertised. Given the f/12.9 maximum aperture, the images produced may not be too spectacular at 500mm. Nevertheless, they still look adequately bright and color saturation is acceptable. […]