Nikon PB-6 with PS-6 ac coupler The Canon Speedlite 600EX-RT is

The Canon Speedlite 600EX-RT is a modern Speedlite for Canon DSLR and mirrorless cameras

Note that this lens can not focus to infinity: it is for high-magnification macro use only

a couple of smaller lenses

and enjoy not having to stop down your lens by hand

Nikon PB-6 with PS-6 ac coupler The Canon Speedlite 600EX-RT isThe NIkon PB 6 is a sturdy late model bellows with autodiaphragm operation and a built in stage focusing system. Accepts any Nikon F mount lens; the camera end is a standard F mount but practical compatibility will depend on the shape of your camera (some bulkier AF and digital cameras will require an additional extension tube not included to clear the back of the rail). In excellent condition, with PS 6 slide duplicator unit.