CA Boylan

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CA Boylan Posted: Dec 14, 2012 4 comments
The Sigma APO Macro 180mm F2.8 EX DG OS HSM lens boasts the company’s proprietary Optical Stabilizer (OS) technology and a wide f/2.8 aperture. The OS feature is said to allow the use of shutter speeds approximately four stops slower than would otherwise be possible, enabling handheld, close-up photography.

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