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Re: [OM] setting infinity focus on Zuiko 35-70/3.6 lens

Subject: Re: [OM] setting infinity focus on Zuiko 35-70/3.6 lens
From: Jim Brokaw <jbrokaw@xxxxxxxxxxx>
Date: Tue, 15 Oct 2002 23:36:11 -0700
Thanks Clint. One serious guy among all you balls-crazy funny boyz...

I'll take a look at the focus. I don't see any signs of impact or previous
surgery... the ball race I opened was the one at the filter-ring end of the
lens. I think I got it about 95 0.000000ill before, and I now have four more to
add in (if I dare).
-- 

Jim Brokaw
OM-1's, -2's, -4's, (no -3's yet) and no OM-oney...


on 10/15/02 12:24 PM, clintonr@xxxxxxxxxxxxxxxx at clintonr@xxxxxxxxxxxxxxxx
wrote:

> It's not unusual for a few (dozen!) of those balls to end up inside the
> barrels, too.  There should be 188 (or so) on either side of the flange.
> 
> That's pretty far off, focus wise.  Any idea why it's off in the first place?
> Any signs of impact, or lens separation?
> 
> Anyway, the focus adjustments are under the zoom grip.  There are holes in the
> ring to get to 3 screws underneath, and (depending on the version) one or more
> set screws as well.  Those are the adjustment at tele.  On the zoom ring
> itself
> are two screws -- those can be loosened and moved forward or backward to
> adjust
> focus at wide.  But I don't think changing either will correct that degree of
> error -- something else is probably wrong....
> 
> Jim Brokaw wrote:
> 
>> I have a nice 35-70/3.6 zoom that won't focus to infinity. When the focus
>> ring hits the infinity stop it is somewhere about 12-15 feet, not infinity.
>> I already unscrewed the end and spilled all the little 1mm ball bearings...
>> I got most of them back (I think).
>> 
>> I didn't see anything obvious under the focus ring, so what is the secret?
>> Any advice or help is appreciated.
>> 
>> Thanks,
>> 
>> Jim Brokaw
>> 
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> 
> 
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> 


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