Hi Chris,
The marks are like little pits in the coating, they possibly look like
something has splattered on the glass and damaged the coating. The could
possibly be rissen (sp?) as apposed to pits, its hard to tell.
Cya
Hi
>From: Chris Brogden Reply-To: [EMAIL PROTECTED] To:
>[EMAIL PROTECTED] Subject: Re: Multicoated filter on a single-coated
>lens Date: Wed, 18 Apr 2001 01:44:02 -0500 (CDT)
>
>On Wed, 18 Apr 2001, Paul Jones wrote:
>
> > 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.
>
>Could it be the cement between two elements in a group separating in
>places? This can show up as small circular marks, I believe.
>
>chris
>
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