Yongnuo 50mm f1.8N for Nikon F door The Canon 155A is a

The Canon 155A is a compact flash unit designed to fit Canon FD mount manual focus SLR cameras

and it focuses past infinity

Made of metal

leatherette-and-aluminum number with twist-lock legs

with some paint and finish wear- but it works well

Yongnuo 50mm f1.8N for Nikon F door The Canon 155A is aThis Yongnuo 50mm f1. 8 lens is a standard 50mm autofocus lens, originally available for Canon EF mount, but here presented in a Nikon mount. Because this was originally a Canon mount lens, and Canon focus rings turn in the opposite direction, you may be wondering whether it focuses the "correct" way for Nikon. The answer is yes, it does: in a strangely overcomplicated gesture, the manual focusing ring is connected to the focusing scale with a reverse