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Re: [OM] loose focusing Zuiko?

Subject: Re: [OM] loose focusing Zuiko?
From: mike blayney <mikeblayney@xxxxxxxxx>
Date: Sun, 11 Mar 2001 23:52:42 -0800 (PST)
I've had a similar(?) problem. The lens was fine for months then one day the
focusing ring became somewhat "detached" from the focusing mechanism - it felt
loose and would not focus the lens. A bit of wriggling and it somehow synched
back in and was OK for a few moments, then it slipped out again etc.

I tightened the set screws under the rubber focusing ring and have had no
problems since, although I'm a bit mystified as to how this fault occurs.


--- Gary Reese <pcacala@xxxxxxxxxxxxx> wrote:
> Hi Frank:
> 
> << 35-70/3.5-4.5 ............  When I turn the focusing ring there is
> some play at first then it feels ok until I rotate it in the opposite
> direction. The image looks sharp across the whole focusing range but the
> looseness really bugs me, it just doesn't have that zuiko quality feel.
> >>
> 
> FWIW, there is no play in a top quality example. They doesn't have
> machined precision to the helical, but there is no slop, either.
> 
> As long as the elements stay aligned and there is no lateral wiggle, or
> movement when you push or pull the barrels, you'll probably be OK
> picture-wise.
> 
> Gary Reese
> Las Vegas, NV
> 
> 
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> 


=====
Mike Blayney, Devon, UK.

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