I have a F50/1.7 and it has developed little marks in the coating and i have no idea what that are from. they dont affect image quality at all. Would be curious to know what caused them.
Cya
>From: Chris Brogden <[EMAIL PROTECTED]>
>Reply-To: [EMAIL PROTECTED]
>To: [EMAIL PROTECTED]
>Subject: Re: Multicoated filter on a single-coated lens
>Date: Tue, 17 Apr 2001 23:52:49 -0500 (CDT)
>
>On Tue, 17 Apr 2001, William Robb wrote:
>
> > I read this and thought to myself..... Lets see if what Clive
> > did was a party trick or real.
>[snip]
> > She really ground that sucker out.
> > The glass cleaned up as good as new, not a mark on it.
> > I might start cleaning my lenses.
>
>I've heard the stories about the cigarette-butting incident from my Pentax
>rep, too. According to him, the Canon and Nikon reps weren't too eager to
>try it on their lenses. :) I clean my less-valuable lenses all the time
>by breathing on them and wiping them with whatever shirt I happen to be
>wearing at the time, provided it's clean. If I remember correctly, the
>SMC is supposed to be tougher than the glass, and there's no way I can
>scratch most glass with my shirt. There's never been a problem so far,
>though I hesitate to do this with my more expensive lenses.
>
>chris
>
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