Archived posting to the Leica Users Group, 1999/01/07

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Subject: Re: [Leica] Metz 40MZ-3i with R6
From: Alan Ball <>
Date: Fri, 08 Jan 1999 08:15:39 +0100


It is totally unimportant that the LCD display of the 40MZ3i should or
should not indicate the aperture selected on the lens while using TTL
flash mode. In this case, the indication is purely informative: it is
the body that sends to the flash the start/stop instructions for the
flash duration. The story is of course different in auto (non-TTL) mode.

The lack of transmission of aperture info to the flash on the R6 is
similar to the situation of most (all?) non-AF cameras using TTL flash
management. A good example is the Nikon FE-2. These camera/lens systems
do not rely on electronic communication between body and lens. The
R8+ROM lenses behaves like the AF generation in that respect. The R6 and
R6.2 behave like the MF generation.

So, John, simply select your aperture on the lens and do not worry about
the rest. Same goes for ISO setting info BTW.


John McLeod wrote:
> Robert,
> Thanks for the input, but I must say that I have a basic grasp of how TTL
> works.  I was unclear with the wording of my question.  The question I had
> was whether the 40MZ-3i can be mounted on an R6 such that when I want to
> change the aperture (I know I'm in TTL mode) I do not have to set the
> aperture on the lens and the flash separately.  In other words, even in TTL
> mode, one wants to select the aperture.  With my set-up I have to not only
> set the lens aperture but actually fuss with the flash aperture setting too.
>  And I was asking if there is a better with an R6.  The answer, from others,
> appears to be "no".
> John McLeod
> ----------
> >From: "Robert G. Stevens" <>
> >To:
> >Subject: Re: [Leica] Metz 40MZ-3i with R6
> >Date: Mon, Jan 4, 1999, 6:37 PM
> >
> >John:
> >
> >You set the flash for TTL flash and the gun delivers the required light for
> >the aperture set.  In other words, with ttl, the flash senses the light
> >hitting the film and shuts off when enough has reached it.  When setting
> >your aperture, you must ensure it is withinh the working range of the
> >flash.  For example, you would not use F16 for objects 50 feet away unless
> >you had really fast film in the camera.
> >
> >Regards,
> >
> >Robert
> >
> >At 10:12 AM 1/4/99 +0000, you wrote:
> >>LUGgers,
> >>
> >>I have a 40MZ-3i flash that works great with my R8 (and SCA 3001 adapter).
> >>When I mount the flash  on an R6 (via the SCA-351 adapter), however, it
> >>seems that rotating the aperture ring on the lens has no effect on the
> >>flash's aperture setting.  In other words, I have to set the aperture on the
> >>lens, then I have to adjust the aperture setting on the flash.  This isn't
> >>the way this is supposed to work is it?  Thanks.
> >>
> >>John McLeod
> >>
> >>
> >>
> >>
> >