Low drain OM-4 circuits (2, maybe 3 generations) were out before the
4T/Ti came out. 4s received by Olympus for service (where the complaint
was "battery drain") got the newer circuits installed.
I had left Olympus and was working at a private repair shop. One day I
got a call from Oly Customer service. "Bring in your old 4s and we'll
swap them for 4Ts". woah.......
___________________________________
John Hermanson | CPS, Inc.
21 South Ln., Huntington NY 11743
631-424-2121 | www.zuiko.com
Olympus OM Service since 1977
Gallery: www.zuiko.com/album/index.html
bj@xxxxxxxxxxxxxxx wrote:
> 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
>
>
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
|