Chuck wrote;
> However, Olympus had not yet figured out how to make a really
> low drain circuit until the OM-4T. The OM-2s and the OM-4 (but not the
> T or Ti) have relatively high drain circuits. If you use alkaline
> batteries (even when the camera is sitting on the shelf) their voltage
> level drops fairly rapidly and falls below the minimum voltage the
> camera's battery checker is looking for.
What I do with my OM4T cameras, is, when I have finished using them for
the moment,
press the <reset> button and turn the speed ring to RED B & 60.
That way I get months or years out of a pair of SR44 batteries.
I've never understood why some talented zuikoholic has not invented a
modification incorporating a microswitch ( there must be dozens that are
suitable) to switch the battery circuit on/off, for all the OMs that gobble
battery life.
AND
> shooting with an OM-1 with mirror lock-up didn't help much
> with vibration... especially with the 200/4 which seems to have a
> sympathetic vibration. The real vibration culprit is not the mirror
but
> the aperture arm. Releasing both 10 seconds before the shutter fires
as
> the OM-2s does allows all vibrations to completely settle down before
> the shutter opens.
I have also wondered why somebody has not developed a rotating device like
a circlip to fit over the appropriate part of (eg) the Zuiko 200/4, so that
just before making the exposure, rotate the device so that it depressed the
stop-down preview button. That would fix the stop-down vibration issue. I
did try this a few times myself; but got distracted and now I don't recall
what the results were.
Brian Swale
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