Archived posting to the Leica Users Group, 2001/07/27

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Subject: RE: [Leica] Glass issues
From: "Austin Franklin" <darkroom@ix.netcom.com>
Date: Fri, 27 Jul 2001 20:19:49 -0400
 
> It seems to me that the real issue with a filter is whether or
> not the glass is
> truly flat and appropriately coated.  If it is flat, the index of
> refraction and
> dispersion shouldn't make any difference, anyway.  And coating
> can hold down
> flare.

Additionally, coplanar and perpendicular to the axis of the lense.  Any of
those issues can cause trouble.
Replies: Reply from Henning Wulff <henningw@archiphoto.com> (RE: [Leica] Glass issues)
Reply from "Mxsmanic" <mxsmanic@hotmail.com> (Re: [Leica] Glass issues)