Archived posting to the Leica Users Group, 1998/07/14

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Subject: Re: [Leica] M6 metering calibration
From: Francesco Sanfilippo <>
Date: Tue, 14 Jul 1998 09:35:51 -0700

Or use an incident meter for best results.....


At 08:07 AM 7/14/98 -0700, you wrote:
>I do not believe that Leica alters the meter in favor of either over or
>under exposure. This would be a disaster with Velvia. Velvia is really an
>EI 40 film. Meters are usually set to 50 for Velvia already giving a
>"skinny" exposure. Velvia does not do well with underexposure. I use tons
>of velvia in my Leicas and if they were underexposing, I would be in trouble.
>Remember, TTL meters are "reflected" meters and it's what you point them at
>that creates the apparent over or under exposure. Take a small (4"x5") 18%
>gray card and after metering the scene, hold up the gray card directly in
>front of the lens (filling the viewfinder frame), in the same plane as the
>film, and re-meter. Chances are that the scene has stuff that is too light
>and giving you a false reading. It's easy to check your meter with a gray
>card. If it is off, either make appropriate adjustments in your methods, or
>get it fixed.
>At 10:06 AM 7/14/98 +0200, you wrote:
>>Feeling really quite stupid in the face of the recent "MESS" posts, I'd
>>like to come back to something a little nearer my field of
>>I shoot mainly slides with my M system. With my previous systems (from
>>other brands) I had the habit of keying in a slight underexposure ratio
>>(between 1/3 and 1/2 stop)when I wanted to accentuate colour saturation.
>>I've done this a few times with my M system but even 1/3 stop seems to
>>be too much. So I stopped doing it altogether. 
>>My question is: does Leica systematically induce underexposure through
>>their calibration settings or is my meter not behaving the way it should
>>? And if this is Leica calibration, has it been defined once and for all
>>? I would say that for a given ISO setting, my M6 underexposes by 1/3
>>stop at least.
>>Again, if this is Leica policy, would it not explain at least part of
>>the "Leica difference" when slides are the media and non informed users
>>the viewers ?  ;-)