ROM Lenses vs Cam Lenses for the Rgreenspun.com : LUSENET : Leica Photography : One Thread
Can someone explain the difference between the ROM lenses and 3-Cam lenses for the R.
-- Alex Tamborrino (email@example.com), October 31, 2001
ROM, 3-cam and 3rd-cam (a.k.a. R-only) lenses may be used on any R body from R3 through R8 without restriction. The ROM contacts are used only by the R8 for zooming the flash head of some Metz flash units and for fine-tuning exposure metering in some exposure modes.
ROM lenses don't have the 1st and 2nd metering cams used by Leicaflex bodies, and have a mount that prevents them from being used on these cameras.
-- Douglas Herr (firstname.lastname@example.org), October 31, 2001.
Alex, You might look at previous threads on this topic for more detail. Both lens types will fit on R cameras and function properly. My understanding is that "currently" the ROM's are used only to send lens information to zoom flashes when used on R8 cameras. I think Leica is ultimately planning to use them for focus confirmation or some similar purpose but they will not admit to that at this time. LB
-- Luther Berry (email@example.com), October 31, 2001.
More about the ROM versus non-ROM in the following previous discussion
-- Lucien (firstname.lastname@example.org), November 03, 2001.