Nikon 135mm f2.8 AI Nikkor  type_Film Holders The 360-degree rotating back is

The 360-degree rotating back is a bail-arm design for easier film holder insertion and removal

this TLA 20 is in excellent condition

Passthrough electronic contacts maintain exposure control and autofocus

A set of three lenses for the Pentax Auto 110 SLR system

Nikon 135mm f2.8 AI Nikkor &nbsptype_Film Holders The 360-degree rotating back isThis Nikon 135mm f2. 8 AI Nikkor lens is a compact short telephoto lens for Nikon F mount SLR cameras. Worth noting: the aperture control of this lens is "de clicked", so there are no individual stops. Great for video, maybe less so for stills. In excellent condition, with only very minor cosmetic wear, clean glass; focusing is smooth and even but slightly higher effort.