The separated element that I replace in the 75-150 (part number ZE1173)
is always sticky around the perimeter. IMO your case may be natural
breakdown.
___________________________________
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
JOHN DUGGAN wrote:
> Optical Instruments (Balham) have given me a ballpark figure of
> £60.00/$90.00 to separate and re-cement the front doublet to M.O.D.
> specifications. The elements themselves are pristine, and re-assembly
> is very straightforward. So this is my back up option.
>
> I am STILL trying to get a definitive answer from Tokina UK (Kenro)
> as to whether the font element is still available from Japan, and if
> so will they sell me one - and at what cost. They do not seem
> particularly helpful. I suppose there is not a lot of profit in it
> for Tokina UK if I do the repair myself. At least I can see a way
> forward.
>
> One possible contributing factor towards the element separation is
> that running under the area where the camera bag had been placed
> central heating pipes run. The floor at that point gets "warm" not
> hot. I wonder if that could have softened the Balsam? However, to
> counter that theory, the edge of the element is still sticky four
> days after dismantling it so perhaps it is just natural breakdown of
> the cement.
>
> Regards John Duggan, Wales, UK
>
>
>
>
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