Features: High-performance F1.4 standard lens with a large aperture of 50mm prime supports full frame. Lens structure: 6 groups of 7 elements, filter size: 55mm. Optical glass lens and multi-layer coating technology are used to effectively improve light transmittance and control backlight for double images. The lens features a gold-plated contact and a high-precision metal mount, durable, corrosion-resistant, and long-lasting. Metal structure design, fine workmanship, and compact design allow you to put the lens in your bag, which can be used for photography such as portraits and photos. Specifications: Material: Magnesium Aluminum Alloy+Optical Glass+Multi-layer Coating Size: Mixed size Focal length: medium and telephoto fixed focus Full Frame: support Focal length: 50mm Filter size: 55mm Aperture range: F1.4-22 Closest focusing distance: 0.45m Optical structure: 7 elements in 6 groups Applicable bayonet: E-mount, F-mount, EF-mount (optional) Lens Purpose: portrait, photo Anti-shake Function: no Full Frame: Support Note: Please allow 0-1 cm error due to manual measurement, please make sure you do not mind before ordering. Please allow slight chromatic aberration due to different screen resolutions. Package includes: 1x 50mm F1.4 lens 1x front cover 1x rear cover 1x lens bag