YONGNUO YN12-35mm F2.8-4m DSM Camera Lens Standard Zoom Lens Multi-coated AF/MF with 12-35mm Focal length F2.8-F4 Large Aperture Compatible with Panasonic G100/GH5/G9/G95/G85/GX9/GX85/GF-10/GF-9/GF-8

【Lens Structure】The lens uses combination of 11 groups and 4 elements,including 3 low-dispersion lenses (LD),4 aspherical lenses,etc., it is lightweight and compact, but with excellent imaging capabilities.

【Multi-layer Coating】The front lens is equipped with an anti-fouling fluoride coating, and it has the same light transmittance as the previous coating,which is oil-resistant,water-resistant,and dust-proof;protecting your lens.

【Support USB Firmware Upgrade】Equipped with a USB Type-C interface,you can download the latest firmware to upgrade the lens to keep the lens at its best performance.

【Equipped With DSM】Digitally controlled stepping motor(DSM) has quick start-stop response, high focusing accuracy, and quieter focusing action, which is suitable for photo shooting and video recording.

【Water-proof Rubber Ring】The lens mount is equipped with a dust-proof and water-proof rubber ring,which can effectively resist the entry of dust and water droplets.