Compatible with Sony E mount full frame auto focu mirrorless cameras, such as Sony A9, A7iii, A7ii, A7 A7R3 A7R4 series cameras. Also works with APS-C frame cameras like sony A6500, A6400, A6300, A6000 The classic 50mm portrait lens with a wide aperture of f/1.8, the lens can capture beautiful photos with smooth background blur effect, even in dark environment 50mm lens is a AF STM(stepping motor) auto focus lens, helps to reduce camera shake and helps capture images with less noise The lens constructure is 11 groups, 7 elements, makes the lens capable of delivering sharp images. If you experience autofocus failure, you can upgrade the firmware online. Meike lenses use a Type-C interface, and the latest firmware is available for download from the Meike official website（Real-time updates）, only supported on Android devices, not Apple (Mac). Meike 50mm f1.8 full frame Auto Focu lenses Multi-layer coating technology is used on both sides of the 50mm lens to restore more realistic colors, bokeh effect is easily achieved, which brings you more fun during photographing. Supports auto focus and manual focus.