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by Bob Atkins , April 2012 The Sigma APO 120-300mm F2.8 EX DG OS HSM has a new optical design using 23 elements in 18 groups, whereas the previous version used 18 elements in 16 groups. It's also slightly longer and slightly...
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Russia in color, a century ago - The Big Picture - Boston.com
With images from southern and central Russia in the news lately due to extensive wildfires, I thought it would be interesting to look back in time with this extraordinary collection of color photographs taken between 1909 and 1912. In those years, photographer Sergei Mikhailovich Prokudin-Gorskii (1863-1944) undertook a photographic survey of the Russian Empire with the support of Tsar Nicholas II. He used a specialized camera to capture three black and white images in fairly quick succession, using red, green and blue filters, allowing them to later be recombined and projected with filtered lanterns to show near true color images. The high quality of the images, combined with the bright colors, make it difficult for viewers to believe that they are looking 100 years back in time - when these photographs were taken, neither the Russian Revolution nor World War I had yet begun.