Canon Macrophoto Coupler FL 55mm lens mount_Nikonos this ain't it

this ain't it

These Nikon filters are designed for 39mm drop-in holders- they won't fit in standard 39mm threads (they're flared and coarser than "normal" filter threads)

but the lens is sharp throughout its zoom range

smooth (if very slightly heavy) focusing action

with a standard lighting stud up top and an extendable reach from 66cm to more than 2m

Canon Macrophoto Coupler FL 55mm lens mount_Nikonos this ain't itThe Canon Macrophoto Coupler FL 55mm is a lens reversing extension tube designed for macro use. You can use it directly on camera or on bellows its totally up to you. Attaches to FD FL cameras and lenses with 55mm filter threads; this also includes the little hood you're meant to mount to the back of the reversed lens. In excellent condition. Lens, camera and bellows are sold separately.