Re: Fogged lens problem

In the grand scheme of things a '69 lens is not all that old.
I have seen, however, fungal fogging in younger lenses.
On the front lens it is usually not too difficult to get
at, usually. I am not sure why you can't get at it.
Do you have a lens 'spanner'? This is a gadget that fits
into the slots at the sides of the retaining ring holding it in place.

If there is a dress ring in front of the retaining ring you will
have to screw it out first with a rubber ring and block of (say)
wood, or whatever. After this all is straightforward. It's a
friction fit.

I use an old pair of fine scissors to screw out the ring - CAREFULLY!
Don't slip and scratch the lens! Adjust the points to fit the slots and
hold it firm and twist.

The fog may just wash off with alcohol (Metho) and a blast
of canned gas (DSE). If it is fungus, google a cure - I believe
household ammonia works OK but you're on your own there!

Zoom lenses are a bit of a headache. I've got one with the
same symptoms but it is the 3rd layer down and I'm unable
to go that deep. I sympathise. Complete dissasembly is
a job for experts and not one for the tyro.

See how you go.
Murray
Brisbane




Gordon W wrote:

> I have an old (1969) Elmo FP-C super8 movie projector with a fogged
lens.  It is
> the first lens in the zoom lens.  I can get at it but can't unscrew it
to get to
> the fogged side.  I've tried numerous repair places and clubs here in OZ
but
> nobody touches these things anymore.
> If somebody could give me a clue or suggest a more appropriate group I
would
> appreciate it.
> Thank you
> 
> Gordon
>