The school my Dad taught at had a Canon Xapshot, which was a similar still video camera, using the same video floppy disks, but only did composite video. I guess it was the predecessor of the Ion?
They used it with a digitizer (Digiview, or something like that?) that connected to the parallel port of a Commodore Amiga. The digitizer was intended to be used with a B&W security camera, doing a 3 pass capture through red, green & blue filters. Dad's school used the Xapshot, though, and an electronic colour splitter to separate the red, green & blue channels.
It was pretty neat for the day, but really crusty compared to modern digital cameras. It would have been at most 640x400, probably only 320x200. I think it might have used the Amiga's HAM mode, though, to (kind of) do 4096 colours.