Vivitar MC 2X-4 Teleconverter for Canon FD Mount  type_Film Holders so usefulness as a camera

so usefulness as a camera is even more limited now than it was when it was new

fine-grained ISO 100 black and white film

This one has a decent amount of cosmetic wear and is missing a section of leatherette around the top of the viewing lens (see photo)

with only very minor wear and under 5500 actuations

Vivitar MC 2X-4 Teleconverter for Canon FD Mount &nbsptype_Film Holders so usefulness as a cameraThe Vivitar MC 2X 4 Teleconverter doubles the focal length of any Canon FD mount lens that can attach to it, at the cost of two stops of light. Manual focus only! In good condition, with light number engraving inside the front housing.