A premium prime lens from Sigma - perfect for Pro bodies Setting the precedent for the Sigma Art range, comes this premium quality Prime lens, the Sigma 50mm f1.4 Art. Well-suited to a life on the front of your pro DSLR body, this excellent lens has been constructed to make the most of the highest resolution image sensors, providing an image quality that is sure to satisfy even the most serious of users. Designed to reward you with consistently sharp and detailed images at all times, the Sigma 50mm Art lens features a large f1.4 aperture, the type of aperture rating that low-light shooters go on and on about. Helping you to remain snap happy throughout your busy day, the large aperture rating of this lens will ensure camera shake is never an issue, allowing for handheld shooting into the evening. Pairing this aperture with the classic “normal” 50mm focal length results in an excellent portrait lens, particularly when used on smaller format APS-C image sensors, where the focal length is magnified. It is possible to pinpoint the subject that will be sharp and in focus in your final image and throw the background into a beautiful messy blur, thanks to this f1.4 aperture. Further design details Good for shooting moving subjects and filming movies, the Sigma 50mm f1.4 features a HSM focus motor, one of Sigma's greatest accomplishments. Lenses containing this focus motor are able to attain accurate focus with ease, in a smooth, quiet and quick manner, to the benefit of all types of users. Optically constructed of 13 elements in 8 groups, performance of the Sigma 50mm Art is consistently good throughout the aperture range, leaving you with no qualms about shooting wide open when necessary. Special Low Dispersion glass is included, helping to reduce the appearance of aberrations and distortions - striving towards the perfection that modern DSLR users can attain.