The lens joins a growing line of full-frame E-mount lenses.
It was nearly two years ago that Yongnuo announced its Android-based MFT mirrorless camera, the YN450, which has since been released. The company has been building up its lens options in Nikon F and Canon EF mount, one of which we reviewed, the 50mm F1.8 for the popular DSLR line.
Yongnuo has now switched focus to Sony E-mount.
Optically, the 35mm F2S shares the same traits as the 85mm F1.8S and is designed from 9 elements in 8 groups with lens coatings to suppress ghosting and glare.
It also has a 7-blade aperture design and a minimum f-stop of F16. For autofocus, it uses a drive stepping motor that should be quiet enough when shooting video. There's also a convenient AF/MF switch on the barrel that's alongside an Fn custom function button.
Since it's a wider focal length, Yongnuo has added a low-dispersion glass element along with an aspherical lens to correct aberration. The lens touts an approximate 13.7" (0.35m) minimum focusing distance with an all-metal bayonet for secure mount. It's quite compact too, weighing 295g.
Price and release date are yet to be announced, but the lens should make an appearance on its Amazon store soon.