It is normal in many lenses to have some loose parts in the diaphragm mech
which may rattle.
John
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----- Original Message -----
From: Jeff Borenstein <jsb@xxxxxxxx>
To: <olympus@xxxxxxxxxxxxxxx>; <cnocbui@xxxxxxxxxxxxx>
Sent: Wednesday, August 11, 1999 8:59 PM
Subject: Re: [OM] Lens Fixing"s?
> Yes, i am shaking the 35-70/2.8-4.6 Sigma and i hear something rattling
> around. Can you, or someone please tell me how i would go about tighting
> the retaining ring to possibly fix this?
>
> Jeff
> ----- Original Message -----
> From: Giles <cnocbui@xxxxxxxxxxxxx>
> To: <olympus@xxxxxxxxxxxxxxx>
> Sent: Tuesday, August 10, 1999 5:00 PM
> Subject: Re: [OM] Lens Fixing"s?
>
>
> >
> > Shake it and listen for the sound of any loose elements. I have a 300mm
> f4.5 that
> > mysteriously wouldn't focus at infinity well. I discovered the front
> element was
> > slightly loose and could move. I tightened the retaining ring and all
was
> well.
> >
> > Giles
> >
>
>
>
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