I have read in a news group that the 'best' lens cleaner is a
colloidion one called Opticlean. Does anyone have any experiences
with this magical stuff?
Apparently a colloidion lens cleaner is one that you gently paint on
to the lens surface. It then sets or gells forming a film which traps
all contaminants. Before it sets completely you apply a special
sticker near the edge which becomes embeded in the film itself. You
then peel off the film and all dust, greasy fingerprints etc.
I also came across a more general reference to colloidion cleaners on
the net wherein astronomers home-brewed their own. They stated it was
the next best method to using a vacuum chamber and a plasma (?).
Because there was NO abrasive action involved such as with all
methods involving a liquid + wiping action. They said it was suitable
for bare metal mirror surfaces. Seems like it would be a good and
safe way to clean an OM viewfinder mirror.
Has anyone actually used Opticlean? I gather it is quite expensive
but have never seen a figure mentioned.
Anyone in the UK care to give them a ring and find out where it can be
obtained and the price?
Caliope Ltd.
3 Marfleet Close
Great Shelford
Cambridge CB2 5LA
United Kingdom
Phone: +41.(1)223.844.375
Fax: +41.(1)223.844.414
I posted this once before but nobody seemed interested or responded
so I thought I would post it again.
Giles
snip
>
> The lens pen is very handy in the field. I got one with a retractable
> brush on the other end, which handles most of the cleaning. I am
> a little worried if there may be some long term effects (more abrasion?)
> I still like the blower, brush and lens tissue combination at home.
> Breathing on the lens is usually sufficient as cleaning fluid.
>
> One problem with cleaning lenses: Even the most gentle cleaning will
> eventually wear down the coating by simple abrasion.
>
> Regards
> Lars
> --
> Lars Haven <mailto:lhaven@xxxxxxxxxxxxx> aka <lhaven@xxxxxxxxxxxx>
> "When writing about women, one must dip one's pen in a rainbow"
> D. Diderot
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