Sigma 85mm f1.4 EX review
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The Sigma AF 85mm f/1.4 EX DG HSM is a short telephoto lens with a bright f1.4 focal ratio. Announced February 2010, it’s the only 85mm large aperture alternative to Nikon or Canon’s own primes that offers auto-focus. The short telephoto lenses from Samyang and Zeiss are manual focus only. It is available for Canon,…

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Sigma 150-500mm f5-6.3 OS review
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The Sigma 150-500mm f/5-6.3 DG OS HSM is a stabilized super-telephoto zoom lens; indeed it’s one of only two stabilized telephoto zoom lenses reaching 500mm focal length, the other being Sigma’s own 50-500mm 4.5-6.3 DG OS HSM. The 150-500mm is available for Canon, Nikon, Sigma, Sony and Pentax mounts. Announced January 2008, it’s the longer…

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