on 4/5/02 6:42 AM, clintonr@xxxxxxxxxxxxxxxx at clintonr@xxxxxxxxxxxxxxxx
wrote:
> OM-2s shutters will sometimes "jump timing", resulting in "capping", as
> you described.
>
> To check for proper curtain timing, open the back and wind the shutter
> half-way, so that the metal bar is approx. centered in the focal
> aperture. Gently touch the cloth to the left of the bar and you should
> be able to feel the metal bar of the other curtain behind it -- if it's
> in the proper location, it should be positioned no more than 1 to 1/2
> bar width to the left of the exposed bar. In other words, when the
> shutter is wound half-way, the curtain bars will overlap no more than 1
> to 1/2 the bar's width. BTW, this check works on almost all OM's.
>
> Chances are you'll find that the bar underneath is 2-3 bar widths to the
> left of the exposed bar. Usually the only solution is to re-time the
> curtains -- simply adjusting travel time rarely solves it unless it's
> only jumped one tooth. The front casting will have to be removed, but
> if you know how you can reposition the curtains without removing the
> shutter itself (it's only the 2nd curtain that slips, _don't_ disturb
> the timing of the first curtain!).
>
>
> Jim Brokaw wrote:
>>
>> adjust the speed of the shutter curtains to cure this problem. I have an
>> OM-2s that does the same thing, a little worse. Pictures are fine up to
>> about 1/125th, but above that they start to 'fade to black' at the far end
>> of the shutter travel.
>> --
>
Well, its nice to know how to check for the problem, but it doesn't sound
like something I'd try to fix myself. I have that body set aside for CLA
when my employment situation improves... I have about 3 to get CLA'd. Do you
offer a quantity discount...?
--
Jim Brokaw
OM-1's, -2's, -4's, (no -3's yet) and no OM-oney...
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