I think film SLR usually places the teleconverter between the lens and the body (sometimes it is called tele-extender, which can be confused with extender tube for newbies like me...) and digital non-SLR camera usually place it before the lens.
I have two questions regarding this:
1. Can film SLR use teleconverter intended for DC?
e.g. can B300 be used on Canon EOS300?
2. Can tele-extender used for film SLR used for Digital SLR (those can change lens)?
e.g. can Canon EF 1.4x be used on Digital SLR?
If yes for the above two, any implication involved? Thanks a lot in advance!