[pure-silver] Re: Slightly OT: Lens Scratches
- From: Charlie Thorsten <charlie_thorsten@xxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Tue, 16 Nov 2004 20:25:12 -0800 (PST)
--- Richard Knoppow <dickburk@xxxxxxxxxxxxx> wrote:
> The flare is not from "catching" the sunlight but
> from
> diffraction around the disturbance in the surface.
> For
> example a lens shade will not compensate for the
> effect of
> the scratches. The difference in effect of scratches
> on the
> front from those on a rear element vary with the
> lens design
> but for Tessars they are about the same.
Yeah I know, you're right. I'm just trying to
think of possible differences between front
element scratches and rear element scratches.
Perhaps I should save my money.
-Charlie
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