The 50mm f/1.4 EX DG HSM is the first large-aperture 50mm prime lens to be manufactured by Sigma and the company has gone to considerable lengths to include the latest designs and technology. Unlike the 50mm f/1.4 primes from other manufacturers, which use designs that hark back to the 1970s, this lens is bang up-to-date, with a Hyper Sonic Motor (HSM) ensuring silent, high-speed AF; a non-rotating front element and a moulded aspherical optical component
Significantly larger and heavier than the 50mm f/1.4 lenses offered by Canon, Nikon and Pentax, it is usable on cameras with both ‘full-frame 35mm’ and ‘APS-C-sized’ sensors, providing a focal length equivalent to approximately 80mm (in 35mm format) with the latter. The optical design consists of eight elements in six groups with one moulded glass aspherical element for correcting coma and producing superior image quality. Super multi-layer lens coating is included to reduce flare and ghosting.
