Also, it behaves as it would if the DOF preview button was stuck down or
the linkage that the DOF button presses on is stuck. Check that while
you're in their after removing the lens mount.
Chuck Norcutt
Wiliam Wagenaar wrote:
> Hi Dawid,
>
> If it is only the spring that is loose or broken, you can easily check
> that by removing the lens mount (3 Philips screws). In all lenses I
> opened so far I could find the spring loeaded lever for the aperture. So
> before sendig it in to John, or ordering a new spring this is an easy to
> do test IMHO.
>
> Wiliam
>
>> -----Oorspronkelijk bericht-----
>> Van: Dawid Loubser [mailto:dawidl@xxxxxxxxxxx]
>> Verzonden: maandag 22 juni 2009 11:19
>> Aan: Olympus Camera Discussion
>> Onderwerp: [OM] Zuiko 90/2.0 Macro diaphragm spring died??
>>
>>
>> Hi all (especially, I am hoping, John...)
>>
>> This morning my 90/2.0 Macro developed a worrying problem - it's
>> behaving as if the
>> aperture stop-down lever is pressed in all the time, i.e. aperture
>> diaphragm is always
>> closed to the set aperture.
>>
>> Upon further investigation, if I move the stop-down lever which the
>> body actuates to stop
>> down the lens, it moves freely with no spring resistance, and thus
>> does not snap back
>> after being stopped down. In all other respects, aperture is smooth,
>> non-oily, and non-sticky.
>>
>> So, I figure some spring has either jumped off or snapped. My
>> problem?
>> I am all the way out
>> here in South Africa, and not easily able to send to John in the
>> sates. Also, I absolutely
>> need my lens for a shoot this coming week-end.
>>
>> The question: I am quite technically sufficient at disassembling
>> fairly lenses/cameras, how difficult
>> is it to get to the aperture mechanism for me to see what's
>> going on?
>> Also, I have access to an old
>> master camera repairman who is amazing - he just did a full Leica M3
>> rebuild for somebody else - but
>> he has not worked much on OM lenses.
>>
>> Is there anything special I need to know before either I or he
>> attempts to disassemble the lens? Or
>> is this murder, and I should use it in stop-down mode until I
>> can send
>> it to John?
>>
>> thanks,
>> Dawid
>>
>> --
>> _________________________________________________________________
>> Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
>> Archives: http://lists.thomasclausen.net/mailman/private/olympus/
>> Themed Olympus Photo Exhibition: http://www.tope.nl/
>> No virus found in this incoming message.
>> Checked by AVG - www.avg.com
>> Version: 8.5.339 / Virus Database: 270.12.81/2188 - Release
>> Date: 06/21/09 20:02:00
>>
>>
>
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
|