Sigma 12-24/4.5-5.6 EX DG (Canon) Black

12-24/4.5-5.6 EX DG (Canon) Four Special Low Dispersion (SLD) glass elements are provided for effective compensation of color aberration, which is a common problem with super-wide angle lenses. Two pieces of molded glass and three aspherical lenses, including two molded glass aspherical lens elements, offer excellent correction for linear distortion as well as all types of aberration. It is an ideal lens for Digital SLR Cameras as well as film SLR cameras.
12-24mm F4.5-5.6 EX DG lens offers a minimum focusing distance of 28cm/11in. at all focal lengths.
The super-wide angle’s useful range of view offers the photographer greater freedom of expression.
This lens is equipped with a fixed Petal-type hood to obtain a superior extraneous light-blocking effect.