Digital BW, The Print

Anthony,

> > I agree with Austin.   Tell us precisely what
> > information is missing.
>
> I have, again and again.

No, actually, you haven't...  I know you believe you have, but you're
missing the point.

> I've just tried again with Austin, although I'm
> not optimistic.

But, as I've said, I see what you claim can't be done, done...

> > Or put another way:  because we know the shape
> > of the film's response curves there is only one
> > unique point on the spectrum that will produce
> > a given density in all three dyes.
>
> Wrong.  There are multiple distributions of light energy in the original
> scene that will produce identical results in the dyes.

Name them, please, and then after you do, show that this is significant.
You are aware that B&W film gives the same tonality for many different
colors?

> If you are convinced that every unique distribution of light
> frequencies in
> the original scene produces a unique RGB result, then explain why
> mixing red
> and green light produces exactly the same result as yellow light, even
> though they have completely different spectral distributions.

Again, show that that is significant.  I do not believe it is, you are not
trying to replicate colors, just how B&W film would have, which, as I've
pointed out, does not require uniqueness in color rendition.

Austin