Leitz 16471J (AKA OTRPO) lens head extension tube brand_Kenko The Yongnuo YN-560 III looks

The Yongnuo YN-560 III looks like a Canon 580EXII

4X N-AF Teleplus Pro 300 teleconverter for Nikon F mount

The extremely offset handles give this head a bit of a strange geometry

Canon camera bag for Canons only

but autofocus will only work on cameras with a built-in focusing motor

Leitz 16471J (AKA OTRPO) lens head extension tube brand_Kenko The Yongnuo YN-560 III looksThe Leitz 16471J (AKA OTRPO) lens head extension tube can be used to increase the magnification of lens heads used on a Visoflex setup. requires a Visoflex, a focusing mount, and a lens head with a matched tube all sold separately. In good working order, with some cosmetic wear.