Re: Lens problem - fungus??

On 12 Nov, 09:32, Peter Chant <REMpete...@[EMAIL PROTECTED]
>
wrote:
> krishnananda wrote:
> > Can you see if the deposit is between 2 lenses in a group or is on a
> > glass-air interface? If the first it is probably separation/cement
> > failure. If the second is can be fungus or another deposit. Fungus can
> > be abated with the lens-in-the-sun trick, but that doesn't always take
> > care of the problem.
>
> Hard to say exactly where it is.  Just blasted the lens with a UV lamp,
> though as the UV lamp is probally intended for parties etc I'm not sure
it
> is short enough wavelength to do the trick.  Can't do any harm though.
>
> > If it is separation you should probably consider replacing the entire
> > lens -- C330 lenses aren't that expensive. If it is some kind of
deposit
> > a good camera repair shop should be able to clean it.
>
> Suspect it is the latter - I've heard the fungus described as
'snowflakes'
> etc, and it is nothing like that.  I suppose the best bet is to just
keep
> using it unless I become unhappy with the images it produces.  If it
does
> go too far I could try swapping the viewing and taking lenses, nothing
to
> loose at this point.  Like you say, probally not worth spending money
on,
> especially as it looks like one of the previous owners used a gritty rag
to
> clean it.
>
> > Hope this helps,
>
> Cheers.
>
> Pete
>
> --http://www.petezilla.co.uk

Fungus starts out innocent-looking, from what I have seen of old
cameras, as a smear of grease. Later the grease forms into blobs and
the blobs sprout filaments and then you know you have fungus. If
caught at the "smear of grease" stage then it might clean off without
any problems, though, if on a coated lens, it might have adversely
affecting the coating somewhat.