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Re: [OM] Incident Light Metering, A moment of weakness

Subject: Re: [OM] Incident Light Metering, A moment of weakness
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
Date: Mon, 17 May 2010 17:35:38 -0400
Did you hear that Brian?  It's your 4T that's saving your battery, not 
switching to a mechanical speed on the dial.

Chuck Norcutt


John Hermanson wrote:
> It doesn't shut off the baseline drain.  All it does is prevent the 
> meter from relighting when the release is pressed.  4T/Ti baseline drain 
> = 5-8 ua, 2S baseline drain 20-22 ua. Old OM-4 approx. 20-22 ua.
> ___________________________________
> 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
> 
> 
> Chuck Norcutt wrote:
>> I didn't think that shut off the meter circuit but apparently it does 
>> and on the OM-2s as well.  Of course, on the 4T you've got lower battery 
>> drain to begin with.  Or, as with my OM-4, it has a 4T circuit so also 
>> has lower drain.
>>
>> Chuck Norcutt
>>
>>
>> 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.
-- 
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