Archived posting to the Leica Users Group, 1999/06/18

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Subject: Re: [Leica] Mercury vs. Alkaline Battery
From: Dave Richards <dprichards@uswest.net>
Date: Fri, 18 Jun 1999 15:08:36 -0600

Where do silver oxide batteries fit into the equation?  That is, if I get
the adapter to use silver oxide PX76's in my Luna Pro what can I expect for
performance as they grow old?

Dave

>If I remember back to college physics, Voltage = Current/Resistance.  Since 
>an analog camera lightmeter functions basically as a variable resistor, the 
>error brought about by an increase in voltage should be linear, and a simple 
{snip}
>they told me.  I have a Nikon FTn which was only "tweaked" to accept the 
>625A, so I have always made it a point to check it against a known meter
each 
>time before using it and reset the ASA if necessary.
>DT
>
>