Sigma 50mm f/1.4 DG HSM Art Lens for Sigma SA spo-default and has a very high

and has a very high water resistance

Three focus modes are available -- A/M

4x teleconverter to allow for on-the-fly switching to an effective 252-560mm f/5

An advanced double-linear and ring Super Sonic wave Motor system ensure fast

low-contrast situations

Sigma 50mm f/1.4 DG HSM Art Lens for Sigma SA spo-default and has a very highThe Sigma 50mm f 1. 4 DG HSM Lens is a fast standard length prime designed to achieve high optical performance through the incorporation of both three Special Low Dispersion glass elements and one moulded glass aspherical element. These elements, coupled with an advanced optical design, work to minimise sagittal coma flare and chromatic aberrations in order to provide high image sharpness and clarity. The lens' large diameter and floating system also