"Kari Kivisalo" <pro### [at] luxlabcom> wrote in message
news:3D0265AC.71BAD9AB@luxlab.com...
> Fernando Gonzalez del Cueto wrote:
> >
> > I added a bit of noise to the image to give it a more "photo" look.
>
> I found that adding Gaussian noise individually to each channel
> and twice as much to blue channel duplicated quite accurately
> noise in a couple of 6000dpi slide scans. Blue channel is more noisy
> in all imaging systems. I scale up the image, add noise, blur a little
> to prevent noise aliasing, scale down and mix with original.

Hi Kari. In my next post, I make a noised version with your technique, I
think it is better. Thanks!

> Was fresnel and conserve_energy used?

No... Actually, I've never used them :-/   Would they help?

Fernando.

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