Don't ask why Yongnuo decided to showcase a full-frame E-mount lens on an APS-C camera body...our guess is as good as yours.

Chinese accessory and lens manufacturer Yongnuo has announced the release of a new 35mm F2 autofocus lens for full-frame Sony cameras.

The new lens is constructed of nine elements in eight groups, including one low-dispersion element and one aspherical element. The lens also features what Yongnuo calls a ‘nano-multilayer coating,’ but doesn’t specify what elements this coating is applied to.

The 35mm F2 has an aperture range of F2-F16, uses a seven-blade aperture diaphragm and has a minimum focusing distance of ‘about’ 35cm (13.7”). Its autofocus is driven by a digitally-controlled stepping motor (DSM) and an onboard USB-C port will allow for firmware updates, should Yongnuo release any to improve function or compatibility.

A diagram of the lens' optical construction.

While constructed mostly of plastic, the lens features metal bayonet mounts and uses gold-plated contacts, which transmit, in addition to data for autofocus and aperture control, EXIF data. Also present is a switch for turning on and off autofocus, as well as a Function (Fn) button that can be customized to perform a certain action or bring up a certain menu.

There’s no word on when exactly the lens will go live or how much it will retail for, but you can keep an eye out on Yongnuo’s online shop and Amazon shop.