Possibly equal... the Canon Ion digital camera
(don't recall the model
number offhand) used 2" floppies too. I remember being utterly
astonished at the microengineering that had gone into that drive
mechanism (the entire mechanism opened up and dropped down when you
ejected the disk).
Some information for web searches
The Canon RC-250 "Xap Shot" used 2" VF-50 diskettes
in so-called Hi-VF (Video Floppy) format, which I believe
was analog single frame video. The evolutionary missing link
between the Camcorder and the DigiCam. Not sure if the 2"
diskettes were the same as the digitally formatable ones.
John A.
the things they had to do before flash memory!