New FD Mount Specifications regarding shape and dimensions are equivalent to those of the R-series. Mounting mechanism conforms to those of FD mount. Specifications regarding shape and dimensions are equivalent to those of the R-series. Specifications regarding shape and dimensions are equivalent to those of the R-series. R Mount R-series lenses for the Canonflex.
Bayonet mount with three outer lugs.
S Mount Universal threaded mount conforming to Leica specification. Special Lenses Macro photo lenses, EX lenses, a lens for enlargers, and AC lenses dedicated for the T-80.