On Wed, May 21, 2008 at 12:41:40AM +0000, [EMAIL PROTECTED] wrote:
> You can induce purple fringing with any lens on a digital sensor. Just shoot 
> dark branches against a white sky.

Or a fluorescent tube against a dark background ...

> Paul
>  -------------- Original message ----------------------
> From: John Mustarde <[EMAIL PROTECTED]>
> > I'm curious - what is a "centering defect" 
> > 
> > Photozone shows a flaw in the DA* 200 - purple
> > fringing. Bad enough for me to avoid it.
> > "Unfortunately the DA* 200mm f/2.8 has quite a problem
> > regarding purple fringing. Purple fringing is a
> > blooming effect that occurs at extreme contrast
> > transitions. The camera sensor has surely a few stakes
> > in here but the effect is also dependent on the lens. "
> > .
> > --
> > John Mustarde
> > Paris, TX
> > 
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