Andre Langevin mused:
>
> Acetone is the best glass cleaner you can find.
Not quite - there's a couple of things I'd try if
there were things acetone couldn't remove (MEK,
Methyl Ethyl Ketone, would probably be the first).
But acetone should get off just about any kind of
oily residue, which is
--- Andre Langevin <[EMAIL PROTECTED]> wrote:
> Acetone is the best glass cleaner you can find. To clean cemented
> elements (a doublet for example), it is recommended to dilute the
> acetone with water 1:1. This recomendation may be true only for the
> old lenses that used Canada balsam as a
Try acetone if you can make sure it stays away from any plastic
surfaces (including plastic elements). Best agent I have ever used.
Alan Chan
Acetone is the best glass cleaner you can find. To clean cemented
elements (a doublet for example), it is recommended to dilute the
acetone with water 1
--- Andre Langevin <[EMAIL PROTECTED]> wrote:
> >Can gunk (for lack of a better term) be cleaned off lens elements
> >without harming the coatings?
>
> Yes. The SMC coatings (maybe others also) are harder than the glass
> underneath!
Try acetone if you can make sure it stays away from any plas
Can gunk (for lack of a better term) be cleaned off lens elements
without harming the coatings?
Joe
Yes. The SMC coatings (maybe others also) are harder than the glass
underneath!
Andre
On Tue, 12 Apr 2005 20:44:23 -0600, Joseph Tainter wrote:
> the stuff gives off gas that deposits as a residue.
I'm sure you know this Joe, but for everyone else:
If you can smell it, it's outgassing, and it might very well be leaving
a residue behind.
Even if you can't smell it, it might be ou
Earlier today I discombobulated:
"Today I received my second F* 300 f4.5 from an eBay auction. It is a
gorgeous lens. Cosmetically and mechanically it is close to pristine.
KEH would grade it no lower than LN-, and perhaps even LN. Then I looked
through the lens toward a strong light and saw tha
John Van Stelton
Focal Point, Inc
(303) 665-6640
[EMAIL PROTECTED]
http://www.focalpointlens.com/
1017 South Boulder Road, Suite E-2
Louisville CO 80027
USA
If anyone can overhaul and clean your lens, John can.
Godfrey
On Apr 12, 2005, at 1:26 PM, jtainter wrote:
About a month ago I bought an
About a month ago I bought an F* 300 f4.5 from eBay. It proved to be badly
damaged. I sent it back and got my money refunded.
Today I received my second F* 300 f4.5 from an eBay auction. It is a gorgeous
lens. Cosmetically and mechanically it is close to pristine. KEH would grade it
no lower th
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