Archived posting to the Leica Users Group, 1996/06/22

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Subject: Re: intermediate shutter speeds on M6?
From: captyng@vtx.ch (Gerard Captijn)
Date: Sun, 23 Jun 1996 08:44:41 +0200

No mechanical harm can be done if one sets shutterspeeds between standard
increments. As written before, each shutterspeed value relates to a resistor
which informs the meter's electronics of the speed set (through its value in
Ohm). In setting shutterspeeds, a little electrical contact brush turns with
the speed dial. In setting a standard exposure value, the contact is on one
resistor contact only. In between shutterspeeds the contact may be in
between resistors or on two resistors. 

The 2 shutterspeed mechanisms however are continuously variable and can be
set at any inbetween speed (exept 1/8 -1/15). It could therefore be that an
inbetween speed will be executed correctly by the shutter but that the
lightmeter produces incorrect exposure as the contact was on the wrong
resistors.

The obvious solution to this problem (M7?) is a continuously variable
exposure time simulator, as used by many other camera manafacturers.
Physical damage will not result from setting intermediate speeds.

Gerard Captijn,
Geneva, Switzerland.
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