Nikon HN-3 lens hood winder This is a Canon FD

This is a Canon FD 55mm f1

with 34mm (E34) front diameters

It's also a "Macro" in the sense that it has a close-focusing mode that provides magnification to 1:5

Mounts to 19mm and 22mm threaded viewfinders with the included adapters

Nikon HN-3 lens hood winder This is a Canon FDThe Nikon HN 3 is a round metal hood for 52mm threaded lenses. A shallow hood, it's suitable for lenses with focal lengths of 35mm and up. While you can expect all the hoods we sell to work properly, we've grouped them into three different condition grades: Working condition hoods will have noticeable paint and finish wear, possibly including small dents which do not affect function. Good condition hoods will have minor paint and finish wear Excellent