Sigma Introduces 50mm F1.4 Lens
Sigma has introduced a new standard prime lens for digital SLRs. The 50mm F1.4 EX DG HSM is designed for use with both full-frame and APS sensors. It incorporates aspherical elements to minimize optical flaws, a super multi-layer lens coating to reduce flare and ghosting, and a Hyper Sonic Motor (HSM) to achieve fast, quiet autofocus. On cameras that have APS-C size sensors, the lens provides an angle of view equivalent to that of an 80mm lens on a 35mm camera. The lens has a minimum focus distance of 17.7 inches.
