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In article <nm8EOXFTD8R+DNvuTiKVKnuQNAlg@4ax.com>, Glen Berry
<7no### [at] ezwv com> wrote:
> There is a technique used in traditional photgraphic printing called
> "unsharp masking." This is *not* to be confused with the same term as
> applied to Photoshop. The term used in Photoshop refers to a method of
> manipulating an image's sharpness. What I ame going to describe, is a
> method to control the tonal range or contrast of an image - not a
> sharpness adjustment.
This sounds like a very interesting feature, but one thing...
> 3) Blur the negative somewhat heavily.
Is this stage necessary for a filter? It seems that it is only done in
"real life" to avoid problems with slight misalignment or with film
grain, these wouldn't exist in a computer generated image.
--
Christopher James Huff - Personal e-mail: chr### [at] yahoo com
TAG(Technical Assistance Group) e-mail: chr### [at] tag povray org
Personal Web page: http://chrishuff.dhs.org/
TAG Web page: http://tag.povray.org/
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