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Re: [OM] Back from Enduro India - OM 35-80/2.8 paid the priceand is stuc

Subject: Re: [OM] Back from Enduro India - OM 35-80/2.8 paid the priceand is stuck on F8
From: John Hermanson <omtech1@xxxxxxxxxxx>
Date: Tue, 22 Feb 2011 08:12:00 -0500
If there is that kind of play in the diaphragm ring, it is possible a 
secondary ring under the mount (which is also held on with 3 screws) is 
loose.

___________________________________
John Hermanson  |   CPS, Inc.
21 South Ln., Huntington NY 11743
631-424-2121  |  www.zuiko.com
Olympus OM Service since 1977
Gallery: www.zuiko.com/album/index.html

On 2/21/2011 4:43 PM, SwissPace wrote:
> I haven't yet been brave enough to remove the rear mount yet, but after
> more inspection I discovered that the aperture adjust ring has play
> front to back and that if I slide it back towards the camera I can turn
> the aperture ring and then when it "springs" forward again it locks the
> ring again. I assume is not some new feature I have found but it seems
> to be quite useful :-)  but more likely a bearing that has come out
> although the good news is It seems that it hasn't affected the sharpness
> of the lens as you can see in this image from this weekend.
>
> <http://thattimeoflife.smugmug.com/Portfolio/2011-Few-Fotos-For-Fun/15910940_2Y2hT#1194515466_BuWA5-L-LB>
>
> Is it tricky to work out where the bearing should go?
>
> Thanks
>
> IanW
>
>
> On 2/18/11 7:50 AM, |-o-| wrote:
>>>> . . . however the biggest casualty was my 35-80/2.8 which seems to be
>> stuck on F8, I think the rear cap came off and maybe something got twisted
>> as it bounced in my camera bag.
>>
>>> Unless the 35-80 is greatly different from other OM lenses, there's a fairly
>> simply part of the mechanism directly under
>>> the mount. The area isn't particularly well sealed, so dust, dirt, etc. 
>>> could
>> get in. Also, a couple of parts are fairly
>>> flimsy. I've fixed 2-3 sticky apertures simply by working there.
>> WATCH OUT for bearings dropping out.
>>
>> As Moose offers, look under the mount first. The aperture ring for that
>> lense also uses a couple (or more ?) bearings. I had to dismantle my old
>> 35-80 once when the bearing came out of the track due to loose mount
>> screws, once I got the bearing back in the right spot the Aperture worked
>> fine again, and didnt wobble between the front and rear of the lens.
>>
>> Cheers
>> Ian Manners
>> Power corrupts...Absolute Power is kinda neat...
>

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