Archived posting to the Leica Users Group, 2007/03/29

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Subject: [Leica] TECH: Advice and experience requested - M8
From: Frank.Dernie at (Frank Dernie)
Date: Thu Mar 29 07:39:07 2007
References: <> <>

I believe the sensor measures the light being reflected from the  
white stripe painted on the shutter curtain. The sensor has a lens on  
it focussed on the central portion of the white stripe so the meter  
is as close as the metal bladed shutter could be to the same as the  
meters on the M6 and M7.

On 29 Mar, 2007, at 15:17, Stan Yoder wrote:

>> I think that the meter is measuring the reflection from the white  
>> band across the shutter, modified by the angle of view of the sensor
> So the shutter aperture is larger than the sensor, i.e., 24x36.  
> Hadn't thought of (or investigated) that, but it makes sense, in  
> that the shutter assembly is reportedly from the R8/9.
> Someone used the term "average" in re the meter pattern. Other than  
> the gray segment, the shutter is black, so is the meter "averaging"  
> the gray segment with the (non-reflecting) black ones? My hunch is  
> that it does not.
> Stan Yoder
> Pittsburgh
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> Leica Users Group.
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In reply to: Message from s.yoder at (Stan Yoder) ([Leica] TECH: Advice and experience requested - M8)