Nikon TC-17E II brand_Other it's a bit weird: the

it's a bit weird: the preset diaphragm system appears to work in the opposite direction of the markings

well suited to a 35mm SLR or mirrorless digital camera

but also a few autofocus film SLRs

originally designed for a camcorder

The Asahi Auto-Takumar 55mm f2 is a standard lens for the M42 thread mount with a spring-loaded

Nikon TC-17E II brand_Other it's a bit weird: theThe Nikon TC 17E II is an autofocus teleconverter designed for select Nikon AF S telephoto lenses (here's Nikon's compatibility list). Provides a 1. 7x focal length boost, loses about a stop and a half of light. In good cosmetic condition, with minor paint and finish wear. Good optics and function. Includes caps.