If you close the aperture using the stop down lever (it's the one that moves
when you press the stop down button) does the aperture stick?
If not the problem is as likely as not the stop - down button itself
sticking rather than anything deeper in the mechanism.
Julian
----- Original Message -----
From: <orava@xxxxxxxx>
To: <olympus@xxxxxxxxxx>
Sent: Wednesday, October 20, 2004 7:50 AM
Subject: [OM] Re: Zuiko 90/2.0 - sticky diaphragm
>
>
> Thank you for welcoming! And thank you all for ideas on what could be
> wrong
> with my beloved zuiko 90mm. Still I have to specify my problem (in favor
> of
> getting even more precise suggestions):
> The diaphgram acts exactly the same way no matter if the lens is mounted
> to a
> body or not. In other words: if I hold the lens in my hand and look
> through it
> and then press the stop-down button and then release it, the diaphgram
> stays
> stopped down. Therefore I am quite sure that the problem is not with lens
> mount
> etc. Does this give any further hint on what could cause the problem?
>
> I bought the lens 1,5 years ago from Finland. (It is my precious...) The
> problem was there already then, but here in Finland you really don't see
> zuiko
> 90mm's more than once in a lifetime, so I was forced to buy the lence no
> matter
> what the condition was.
>
> Taking photos is just normal with OM4Ti and OM10. When I fire the shutter
> the
> diaphgram always opens again. But if I press the stop-down button (and the
> aperture is set to 8-22) then the diaphgram sticks and stays stopped down.
> Therefore I am not even sure whether I want to pay about 100 USD/euros for
> repairing this because it is not really bothering me.
>
>
> Olli
>
>
> Footnote:
> Are you in need of a free domain name? Please visit www.tk
>
>
>
>>
>>
>>
>> Welcome Olli!
>>
>> I have a 90/2 that does not have this problem so I cannot help, really,
>>
>> but I thought that I would offer you a welcome anyway :-)
>>
>> Chris
>>
>> On 19 Oct 2004, at 7:41, orava@xxxxxxxx wrote:
>>
>> >
>> >
>> > Hello!
>> >
>> > I have a kind of a problem with my zuiko 90/2.0 macro. If the
>> aperture
>> > is set
>> > to 8-22 and when I push the stop-down button and then release it THE
>> > DIAPHGRAM
>> > DOES NOT FREELY OPEN. I meant that the diaphgram stays stopped down.
>> I
>> > have to
>> > shake the camera or touch slightly the aperture ring to release the
>> > diaphgram
>> > again.
>> >
>> >
>> > Now I would like to ask:
>> > Is this a common problem (especially with 90/2.0)? Is it likely an
>> > expensive or
>> > a cheap repair to fix this problem? And btw, what could cause this
>> > stickiness?
>> > Is it a mechanical problem, or just dirt or have the lubricants
>> > wandered to a
>> > wrong place?
>> >
>> > Thanks!!
>> >
>> > Olli
>> <|_:-)_|>
>> C M I Barker
>> Cambridgeshire, Great Britain.
>> +44 (0)7092 251126
>> http://www.threeshoes.co.uk
>> http://homepage.mac.com/zuiko
>>
>
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