Specifications:*Weight:366g *Frame Type: APS-C *Lens construction: 7 elements in 5 groups *Angle of view: 32°*Max.-Min. Aperture: F1.2-F16 *Focus Range: Approx. 0.5m- ∞ Package Listing: TTArtisan 50mm F1.2 Camera Lens; 52mm MC-UV Filter; 52mm Lens Hood; User Manual Well Built Lens::) Rugged all mirror body structure, ensure lens assemble accuracy and durability.:) Weighing only 336g, light and compact. Easy to carry and operate. Really great lens for "walk around" casual photography.:) Multi-layer coating design, solves the problem of iris dispersion, eliminated ghosts and glare. F1.2 Large Aperture: :) Lens is with f1.2 bright large aperture, which will deliver sharp images with gorgeous background blur,highlight your shooting objects.:) F1.2 Large Aperture is helpful to reduce the noise of the image and improve the image quality, especially shooting at night.:) What's more, even wide open its f/1.2 maximum aperture, central part of the image could maintain its high quality! 50mm Focal Length: :) This lens has 50mm focal length,which is equal to full-frame 75mm,and will let the portrait you shoot much natural and stereoscopical.:) The perspective close to the human eyes,which makes the images full of life smelling.:) Pretty suitable for portrait. humanities or still life shooting. But with the help of large aperture, provides you more phototgraphy theme like landscape, night scene,food, street photo, tourist, etc. Position Point Design::) Lens body has a red position point, which is used to assist in positioning the focus distance scale and depth of field meter on the lens. NOTEPlease kindly note the manual focus lens can't be recognized by camera unless coming with the camera setting [Realease without lens]You need to remove the original rotating lens cover, install the lens hood,then can use normal lens cap.