Doug wrote:
>
>
> I have tried John Hermanson's advice -- got denatured alcohol at the
> hardware store. It has, as far as I can tell, nothing in it
> but methyl
> alcohol and ethyl alcohol. And *yet*, even it leaves a
> purplish residue.
> I think I'm going to take this mirror in to be professionally cleaned.
> (Not that you can see this residue in the viewfinder, but I'm
> worried it
> will alter the meter's reading, no?)
>
> Another question: my 24/2.8 has what looks to be a sliver of
> something
> foreign *beneath the surface* of the rear element -- possibly
> even cast in
> the glass itself. Should I worry about this, or is it just
> one of those
> anomalies that has no effect on the picture?
>
You could probably get it out if you attacked the rear element with an angle
grinder.
Wayne Harridge
Ivanhoe, Victoria, Australia
http://www.geocities.com/Paris/Louvre/6152/
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