At 2:41 AM +0000 3/15/03, olympus-digest wrote:
>Date: Fri, 14 Mar 2003 19:03:28 -0500
>From: "John A. Lind" <jlind@xxxxxxxxxxxx>
>Subject: Re: [OM] A conspiracy?
>
>At 12:58 3/14/03, John Cwiklinski wrote:
>
> >I am not disagreeing with you Joe et al, but it would seem that an
> >algorithm (software) would be able to sense and compensate to correct this
> >problem, thereby making the "better" slr lens more practical for digital.
> >
> >John Cwiklinski
>
>The software algorithms for eliminating aliasing issues, including the
>Moire problem, effectively blur the digital image. Result? Pay now or pay
>later, but you will still pay, one way or t'other.
You bring up a good point. Actually, it's pay a little now, or a lot later.
If one does the blurring before the CCD, the lost information doesn't end up in
low-frequency alias fringes. Because those fringes are hard to blur out, being
mucch larger than the CCD pitch or lens resolution, it takes far more post-CCD
blurring than pre-CCD blurring to be rid of the fringes.
Joe Gwinn.
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