Standard 85mm full frame lens for portrait, subject, architecture, and landscape photography. Wide aperture of f/1.8 with 9 diaphragm blades, designed to produce a super smooth round blur effect (bokeh). Lens construction includes 9 elements in 6 groups with decent build quality, capable of delivering sharp and clear images. Compatible with Canon APS-C frame cameras, the equivalent focal length is 136mm. It is also usable on Canon and Sony mirrorless cameras with an adapter (not included). Features a micro USB firmware upgrade interface, enabling you to upgrade the lens online. The 85mm f/1.8 AF prime lens is Meike's first autofocus lens. Compatible with all Canon EOS EF mount digital SLR cameras. It's a full frame lens, but also usable on APS-C bodies, with an equivalent focal length of 136mm on APS-C bodies.