Gunzorro wrote:
The R system goes back in to the 60s, and the ROM models were all newer by a fair amount. And then, there won't ever be anymore -- the available supply is it.
I think some later film bodies require the newer lenses, ROM or otherwise.
ROM doesn't indicate a newer lens because the ROM contacts can be added to most R lenses regardless of age. R lenses that require additional mirror box clearance require a body made after 1974 (Leicaflex SL2 or newer), and ROM lenses require a body made after 1976 (R3 or newer; exception: ROM lenses that don't require extra mirror box clearance may be used on the 1968-1972 Leicaflex SL with minor modification).
Any R3 or newer body can use any R lens with full function as long as the lens has been updated with the 3rd metering cam. Pre-1968 lenses with the single metering cam for the original Leicaflex might be uneconomical to update but they can usually be used with stop-down metering.