#RCA camera
They do sell minibellows for enlarger lenses (and I agree, the little buggers
are too d*** expensive for what you get 8) I've seen them advertised for
macro/copystand work by, of all people, Spiratone. They have a variety of
mounting systems (c-Nikon, c-Minolta, etc.)
As with you, this is dated information. I do remember seeing one for video
work somewhere <suspiciously eyeing large stack of 'Popular Photography'
teetering over in corner of room> but can't remember the specifics.