Could be the problem is nothing more than oily rings in the back mount.
That is relatively easy to fix compared to taking the diaphragm blades out.
_________________________________
John Hermanson www.zuiko.com
Camtech, Olympus Sales & Service since 1977
21 South Lane, Huntington NY 11743-4714
631-424-2121 For Free Olympus manuals,
please call 1-800-221-3000
_________________________________
----- Original Message -----
From: "Jochen Schiffler" <jochen.schiffler@xxxxxxxxxxx>
To: "Olympus" <olympus@xxxxxxxxxxxxxxx>
Sent: Saturday, July 06, 2002 7:20 AM
Subject: [OM] Sticky apertue on 50mm/1.4
> Hi,
>
> I couldn't resist and got a Zuiko 50mm/1.4 (1163137) with caps and bag
from
> bay. (I know, I already expect a 1.4 from Tom but ...well, you know). The
> price was 53,- Euro and I thought it's quite ok because the seller said
> 'technical and optical absolutely top condition, no marks on glass'.
>
> The glass is really in excellent condition and there is nearly no
cosmetical
> wear (not even on the mount ring). Bad luck when I found it suffers from
> sluggish diaphragm (maybe used too seldom?). The blades look clean but
move
> sluggish and sometimes even stay closed for a second or do not open
> completely when I use the preview button. Closing might be ok but opening
is
> unreliable.
>
> In the archives I found a message describing how it might be fixed.
> http://zuiko.sls.bc.ca/swright/archives/1999/msg13188.html
>
> Should I keep the lens, ask for a refund and try to fix it or should I
> return it?
> Seems a refund of 15-20 Euro realistic?
>
> Thanx
> Jochen
>
>
>
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>
>
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