09-03-2013, 03:40 PM #1
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Sigma 180mm f2.8 Macro Lens Image Gallery Discussion
The Sigma 180mm f2.8 telephoto macro lens is one hefty piece of machinery. It is solid and robustly constructed. The lens was designed for full frame cameras, but can also be paired with cropped sensor APS-C cameras. The lens is available for Nikon, Canon, Sigma, and Sony/Minolta cameras. The lens features 19 elements in 14 groups. The 180mm f2.8 macro lens has a rounded 9 blade diaphragm for a smooth, defocused look. The lens also incorporates a floating Internal Focusing system which reduces aberration. Three FLD ("F" Low Dispersion) glass elements are also present to correct color aberration.
The lens uses a Hyper-Sonic Motor (HSM) to give the user a quiet autofocusing experience. It also has an Optical Stabilizer (OS) that helps reduce camera shake--this is a feature that is really important to this photographer as I generally hand-hold most of my shots. Since this lens is pretty heavy, the OS feature can be a life saver when capturing images in lower lighting or after extended amounts of shooting.
One of my favorite features of this lens is the 1:1 magnification ratio in its macro mode. It focuses on a subject as close as 18.5 inches.
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