Archived posting to the Leica Users Group, 1999/11/06

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Subject: Re: [Leica] 3rd Cam addition
From: Doug Herr <Telyt@compuserve.com>
Date: Sat, 6 Nov 1999 08:39:48 -0500

>>>
Pardon me for being dense and/or not very knowledgeable on R lenses, but 
what's the 3-cam mean?  and what are ROM lenses?
<<<

3-cam lenses will meter properly on all R-bodies.  The older 2-cam lenses
are for the Leicaflex/Leicaflex SL/Leicaflex SL2 bodies (and 1-cam lenses
are for the original Leicaflex).  3rd-cam (not the same as 3-cam) lenses
will meter properly on R-bodies from R3 onward but lack the cams for
metering with any of the Leicaflex bodies.  ROM lenses have the 3rd cam for
metering on all bodies from R3 onward and have a ROM chip whose functions
are not really clear to me, but is used by R8 (and I presume future)
bodies.  ROM lenses cannot be used on any Leicalfex body.

Doug Herr
Sacramento
http://ourworld.compuserve.com/homepages/telyt