Yongnuo has announced its third full-frame lens in their Sony E-Mount prime lineup. The new Yongnuo YN 50mm F1.8S DF DSM expands the range to three, adding to the YN 35mm f2S DF DSM and the YN 85mm f1.8S DF DSM. As with the other two, this is a relatively low budget lens with a price estimated to be around $300-350 when it hits the US. Of course, being made by a brand like Yongnuo, we kind of expect it to be fairly low budget. That being said, it does look like YN’s actually making their own lenses now and not simply copying Canon’s and sticking other mounts on them.

The new lens is reported to be retailing for 1,999 yuan in China, which is around US$312.40. Whether this will round down to $300 or round up to $350 once it gets out across the Pacific remains to be seen. How it stands up in terms of overall value, taking price and image quality into account, and whether or not it’s a bargain is also yet to be determined as there don’t seem to be any sample images posted that have been shot with the lens. As seems to be the trend with a lot of 3rd party lenses these days, the YN 50mm F1.8S DF DSM contains a built-in USB port for installing firmware updates and making adjustments to the lens. Well, it had to be, really, didn’t it? The only other option is a dock and most people aren’t too keen on those anymore. Also on the outside are a couple of function buttons and a switch to let you flip between manual and autofocus.

[via SonyAddict]