【F1.8 Large Aperture & 7 Aperture Blades】85MM F1.8 full-frame AF Lens, suit for Nikon Z mount mirrorless cameras, F1.8 Large Aperture, 9 elements in 8 groups, 7 aperture blades, DSM Digital Stepping Motor. 【Small Body, Light-weight Design】The maximum magnification is about 0.13 times, the closest focusing distance is about 0.8m, filter diameter is 58mm, the maximum diameter and length is about 3.94 x 3.94 x 5.12 inches, the net weight is about 1.10 lbs. 【Aspherical Lens & Low-dispersion Glass Lens】YN85MM F1.8Z DF DSM Lens has a Control Ring, Fn function key, Low-dispersion glass, USB Firmwire Upgrade. 【Dual FN Function Button & AF/MF Focus Mode Switch】Equipped with a dust-proof and water-proof rubber ring, Nono-multilayer coating, Metal Bayonet, Gold-plated Contacts. 【for Nikon Z mount Lens】Compatible with Nikon Z-mount Mirrorless Cameras, Nikon Z9, Z50, Z7 II, Z7, Z6 II, Z6, Z5 YONGNUO YN85MM F1.8Z for Nikon