Sigma 30mm f/1.4 - KenRockwell.com: Photography, Cameras and Taking Better Pictur

If you need a full f/1.4 in a normal focal length for a small-format digital camera, can work around some repeatable autofocus inaccuracy and want to spend about $400, this is your lens. It comes in versions to fit Canon, Nikon, 4/3 system (Olympus, Panas

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