Viltrox Z 85mm f/1.8 Full-frame med-telephoto autofocus portrait prime lens • Durable mechanical structure, light weight • Compatible with Nikon Z-series mirrorless camera • New optical technology to achieve a stunning large viewing angle • Multi-layer coating to minimize glare and ghosting Natural depth of field blur effect. Natural blur background is used to effectively highlight the subject, which achieves an impressive depth of field effect. Exquisite circular blur effect. 9 aperture blades, through the large aperture, the light source in the picture can be reproduced to beautiful round spots with clear and deep colors. Support Eye AF. Easily detect and track the subject. Eye detecting, automatically track and follow focus the subject. Quiet and smooth video shooting. STM stepper motor, low noise accurate focus, quiet shooting… High-speed snapshot. Improve focusing efficiency and achieve accurate and smooth autofocus.