Digital BW, The Print

Anthony,

> > Being that I've been in the digital imaging
> > business for over 25 years, any discussion on
> > digital imaging is very important to me.
>
> That's why it mystifies me that you don't seem to understand this.

The other option is that I'm correct, and you are wrong.  Strongly consider
that.

> It
> _must_ have come up many times in the past, I should think.

It has come up many times, and as I've said, my premise is correct.

> > Yes, and that's why it's done all the time,
> > whether you concur or not.
>
> Show me an example.  Show me an algorithm or table or anything that will
> transform an RGB image from Provia, or from a digital camera, into a B&W
> image that exactly duplicates Tri-X, for example.  I want to see the
> miracle.

I suggest you do a web search.

> > Everything is an approximation.
>
> No.  Some transformations are exact.  For example, an inversion
> of an image
> to its negative form is lossless and exact; every positive image
> has one and
> only one negative image, and vice versa.

The original data is not exact, and that is what the premise is based on, so
the transformation is also an approximation of the original scene.

Austin