I've searched the archives on this without much success...
From what I have picked up here and there, the OM-4 does a 'battery check'
before releasing the shutter; does anyone know what level of current drain
is applied to the batteries during this check? I have a small battery
tester (made for button cells) that tests at 1 milliampere; when I check
batteries that my newly acquired OM-4 doesn't like, they test "good" on
this tester, suggesting that the OM-4 draws a LOT more current during its
pre-release test, and during an actual firing. I'm not adverse to making
this little tester "OM Specific" by altering a load resistor or two, if I
had some idea what load current I should be trying for. Also, does anyone
know the load currents for other models? I have a 2n, 2s, PC, 4 and 4T; at
one time or another they've all 'failed' with a set of batteries that
"pass" the manual in-camera check, but immediately recover when a new set
of 357's are installed. Generally, said batteries also test "good" on my
external tester.
Any insights will be greatly appreciated!
Curt
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