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 December 4, 2009 - 08:30 GMT
Sigma announces the new 17-70mm F2.8-4 DC MACRO OS HSM lens. A maximum aperture of F2.8 produces an attractive background blur and improves autofocus speed. The lens has a minimum focusing distance of 22cm (8.7in.) throughout the entire zoom range and maximum magnification ratio of 1:2.7, making it ideal for close-up photography. It is possible to focus as close as approximately 4.7cm (1.9in.) from the tip of the lens to the subject making this lens particularly useful for close-up photography...More
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