Archived posting to the Leica Users Group, 2000/07/27

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Subject: Re: [Leica] Re: Re: R8 or R7
From: "Rick Dykstra" <>
Date: Thu, 27 Jul 2000 21:40:55 +1000

O'Kay.  Here's what I know, or understand, at least.

The ROM contact thingys tell your flash where to zoom to.
The chip also stores information about the actual aperture of the lens,
rather than the nominal aperture, which is printed on the outside of the
lens and on the box.  This actual aperture is taken into account by the R8
in the automatic modes, to give us lucky R8 owners betterly exposed shots
(according to the cameras idea of well exposed, which is pretty well on the
ball, so far as I've experienced.).

With the modular lenses, the particular aperture characteristics of the lens
head are passed to the focussing module, which then passes the ROM parameter
for both lens units on to the camera, which then makes sense of it all and
takes a beautiful picture.  Or so it goes.

Having hopefully contributed to this debate, I will now slide back into the
deep lurk you all know me for.


Rick (got all that from Leica Fotographie a while back) Dykstra