swisspace wrote:
>I think maybe I should have stopped working on the rear element group
>about half an hour before I did. I had manged to get it looking quite
>clear and the fungus which was between the layers had I thought receded,
>but my wife reported that she could still see it, so I thought maybe a
>little longer in the acetone would do the trick, unfortunately it seems
>to have penetrated more into the glue between the layers so optically I
>am back to where I was when I started.
>
>
>The second element the single one, I managed to improve with some very
>gentle rubbing with some hand creme (not ponds though). But you can
>still see the remnants of the fungus on the lens which to my wifes eye
>appears as watermarks.
>
>I am aware that this is a rare lens, however its real worth is now
>debatable when compared against the two hundred dollar 8mm pelang and
>now the new 8mm digital zuiko.
>
>The options now though are to repair the lens,
>
>1. I could try contacting focal point (or can this be done by a list
>member e.g John) and just ship them the rear elements to see if they
>can repair them but it would be quicker if I could find a company in
>switzerland or germany or even UK. Should I maybe ask at one of the
>opticians here.
>
>2. I could leave the rear group to soak overnight in acetone which I
>am fairly confident will separate them - then get hold of some new
>cement and try recementing, Is the rotation as well as alignment
>important.
>
No, the lens elements are symetrical around their axes.
>For the other element I could buy some ponds cream and try
>again rubbing a little bit then cleaning it off, then a bit more etc so
>I gently polish the surface, hopefully removing the marks.
>
>
You are probably overdoing it. Stop showing it to your wife.
>3. I just leave it and put it all back together and use it.
>
>another thought but now I have the lenses in reasonable condition,
>assuming they are separated could they not be measured by an optician or
>their lab and then new ones made with equivalent strength and refractive
>index etc, I am assuming technology has given us some benefit ;-) and
>if one set can be made then two or more could be made to help the others
>on the list - OR am I just looking at things far to simply.
>
>
Nice idea! Your local optician won't be able to do it and the price will
be high.
Moose
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