Thank you for the advice, I will keep trying. The annoying thing is that
you have to put the whole lens together before you know if you succeded or
not.
J
----- Original Message -----
From: "John Hermanson" <omtech1@xxxxxxxxxxx>
To: <olympus@xxxxxxxxxx>
Sent: Thursday, July 06, 2006 06:43
Subject: [OM] Re: Fixing non-focusing lenses
>
> Sounds like the focus helicoid was unscrewed. The thread has multiple
> starting points, so if the correct one is not used, it will not focus
> properly and diaphragm levers will be in the wrong place. If you have
> another 1.4 to compare it to, remove the rear mount to see where the
> inner barrel should be when focused to infinity. Remove the keys from
> the defective lens (2 metal "fingers" that extend into the lens, held
> into lens by 2 screws each), screw the front barrel out until the
> threads disengage (you can mark the point of disengagement with a pencil
> on the edge of the filter ring, lined up with where infinity mark on
> focus ring is. Hopefully focus ring has not been taken off. I do not
> know to what point this lens has been dis-assembled).
>
> Keep turning slightly until next set of threads click in place, screw
> into lens most of the way and see if slots in tube line up with where
> the keys go. Eventually, you'll try all the starting points, one of
> which is correct.
>
> ___________________________________
> John Hermanson
> Camtech Photo Services, Inc.
> 21 South Lane, Huntington NY 11743
> 631-424-2121 | Olympus OM Service since 1977
> http://www.zuiko.com | omtech1 AT verizon.net
>
>
> Johann Thorsson wrote:
>> Many years ago I was given a 50mm f/1.4 lens. The focusing barrell had
>> somehow unscrewed and fallen out of, and the owner decided it wasn't
>> worth
>> having fixed. As clever as I thought I was at the time (had just ruined
>> my
>> parents stereo in an unsuccessful (an unnecessary) repair project) I was
>> simply going to open it up, screw the thing together and fasten the
>> screws
>> again. Well, needless to say, it turned out to be not that simple, I
>> have
>> never been able to assemble it properly, as the inifinity is never
>> correct
>> (it doesn't focus at infinity). So, is there anyone here who knows if
>> there
>> are any repair guides available? If not, then I will probably end up
>> throwing this away. It is of course possible that I am doing this
>> correctly, but the glass is somehow misaligned.
>>
>>
>
>
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