Archived posting to the Leica Users Group, 1999/06/18
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]To try to help with this question, I just did a little test comparing a new Varta V625 PX, 1.35V Mercury battery with a Varta V625 U, 1.5V Alkaline battery. First I made various exposure measurements with a recently calibrated Leicaflex SL and the Mercury battery. The measurements agreed with the other metering systems I have available. I then substituted the Alkaline battery and the measurement read high to the point that it would have resulted in about a 1/3rd stop underexposure. So far as I can tell, the error is linear but I wouldn't trust adjusting the meter to account for it. I tried that in the past and it didn't work for me. Next, I performed the same tests using a very reliable MR-4 meter and the results were consistent with those obtained with the SL (and an SL/2). Bud Cook