Nikon TC-17E II lens mount_Contax G The classic Leica M3 is

The classic Leica M3 is Leica's first M-mount camera

This chrome Hasselblad Magazine 12 is in reasonably good condition

They are designed to fit only a specific lens or several

fast wide angle lens for Fuji X-mount cameras

If you don't mind a bit of extra exercise when you're changing apertures

Nikon TC-17E II lens mount_Contax G The classic Leica M3 isThe 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.