Excellent - another medal for John!
On 06/02/2012, marc simon <marc.simon@xxxxxxxxx> wrote:
> One million thanks John !
> You are "The Man"...I was sure you'll have the solution:
> in fact there are two small screws under the rubber: they were loose I
> see a red deposit probably some locking glue...on the thread... in
> turning the ring I discovered two small threaded holes on two some
> metallic pieces under the ring (with the zoom at half way...) some
> "screwing later"...Bingo it works...and on the radio at the same time
> Counting Crows singing Mr Jones and me...for one moment I translate it
> in "Mr John and me"...:)
> It's too cold here to go camping, but for sure I'm a happy camper !
> For the record when the zoom is fully extended the two screws are in
> line with the white dot of the rotating collar of the foot on the right
> at 90° clockwise
> regards
> marc
> bois-de-villers Belgium
>
>
> Le 6/02/2012 12:48, John Hermanson a écrit :
>> When zoomed all the way back, there is probably supposed to be a large
>> screw head visible through a hole in the zoom ring (under the rubber).
>> Screw head rides in a track inside the zoom ring. It is possible screw
>> has come out of the track or come unscrewed from the zoom tubes. If
>> unscrewed (or broken off) it would be rolling/rattling around. I have
>> never worked on the Olympus but it is similar to Tamron 70-200.
>>
>> ___________________________________
>> 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 2/4/2012 2:43 PM, Wiliam Wagenaar wrote:
>>> Sorry Moose,
>>>
>>> I believe that focusing is 100% electronically, but zooming is
>>> mechanical.
>>> Even works when lens is disconnected from the body. What's wrong with the
>>> lens? No idea!
>>>
>>> Mechanical Wiliam
>>>
>>> -----Original Message-----
>>> From: Moose [mailto:olymoose@xxxxxxxxx]
>>> Sent: zaterdag 4 februari 2012 19:21
>>> To: Olympus Camera Discussion
>>> Subject: Re: [OM] trouble with my 50-200
>>>
>>> On 2/4/2012 7:06 AM, marc simon wrote:
>>>> Hi, all,
>>>> bad luck this morning at one moment my Zuiko ED 50-200 doesn't want to
>>>> zoom anymore:it looks like there is something "non-functioning" in the
>>>> linkage between the zoom ring and the optic. With some tweaking I could
>>>> manually extend the lens, like a one-ring zoom, and when I look at the
>>>> data the focal lens looks correct, and the autofocus still works...
>>>> So it looks like some mechanical linkage is not functioning anymore.
>>> I can't believe that is any mechanical function. Everything is
>>> electrical.
>>> There are a couple of other brands that
>>> accommodate their old MF lenses with mechanical connections.
>>>
>>> First thing to do is clean the contacts on lens and body.
>>>
>>>> ... It was cold this morning, but the lens doesn't suffer any shock...
>>> Perfect situation for a tiny bit of condensation to mess up a contact
>>> that
>>> was already a little dirty.
>>>
>>> The Tamron lenses on my Canons very occasionally cease to AF properly,
>>> busily and noisily hunting back and forth. Sounds
>>> like something terrible has happened. If it hasn't happened for months,
>>> it
>>> often takes me a moment to remember what it
>>> is. A quick wipe of contacts with my shirt or other piece of cloth puts
>>> things right. Then I try to remember to do a
>>> better job when back out of the field.
>>>
>>> Cleanliness Is Next to Function Moose
>>>
> --
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