Canon updates its two constant aperture 70-200mm telephotos
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Canon updates its two constant aperture 70-200mm telephotos

70-200mm is one of the most popular short-medium telephoto focal lengths for amateurs, enthusiasts and professionals, and Canon makes two constant-aperture versions for its EOS DSLR cameras. The constant maximum aperture helps low light shooting and creative background blur. The f/2.8 is popular with pros while the f/4.0 versions is more affordable for amateurs. Both…