The Canon EF mount Sigma 50mm f/1.4 DG HSM Lens is designed for superior image quality, incorporating three Special Low Dispersion elements and a molded glass aspherical element to correct aberrations and enhance sharpness. Its large diameter and floating system maintain even brightness and minimize vignetting. The Super Multi-Layer Coating reduces flare and ghosting for improved contrast and color accuracy. The Hyper Sonic AF Motor ensures fast, quiet, and smooth autofocus. The lens allows manual focus by rotating the focus ring anytime. Part of Sigma's Art line, it achieves exceptional optical performance and is ideal for artistic photography. The advanced design includes features for impressive out-of-focus effects, aiding in beautiful bokeh and minimizing distortions. Its design supports astrophotography by reducing edge blur. The three SLD glass elements ensure sharpness, clarity, and contrast across all settings. With a large diameter, it achieves excellent peripheral brightness even at wide apertures, while the Super Multi-Layer Coating prevents flare and ghosting. The floating system adjusts element distance during focus to enhance performance. The Hyper Sonic AF Motor coupled with an optimized algorithm offers refined focus control. A nine-blade diaphragm creates pleasing out-of-focus areas. Built with a Thermally Stable Composite and metal, it withstands varying temperatures. The brass bayonet mount ensures durability, and the lens accommodates the optional Sigma USB Dock for customization. Accessories include front and rear caps, lens hood, and a carrying case.