Digital BW, The Print

Anthony,

> > Who cares about that, but you?
>
> A lot of people.

Again, so what?  That in NO WAY negates the premise that you CAN in fact
convert the RGB information into grayscale tonality in such a way that it is
visually indistinguishable than if the scene was photographed using Tri-X.

> Many photographers use colored filters for black and
> white, in order to change the response to light.  A red filter,
> for example,
> darkens the sky considerably.

Yes, but so what?  IT ISN'T PART OF THE DISCUSSION.  This is a separate
issue, and in no way mitigates what I've said.

> > You know, if this just doesn't work, then how
> > come it DOES in fact work?
>
> It _doesn't_ work.

OK, if you say so ;-)

> > I see B&W images made from color ALL the time,
> > and they look VERY close to "same" B&W images
> > shot with B&W film...
>
> Very close is not the same.  And sometimes it's not even very close.

Well, if you use amorphous terms that go unqualified, then of course.  What
I claim is very close, you will claim is not.  How about you quantify "very
close" for us?

> > So, how is it that thousands of people already
> > do what you claim impossible?
>
> They don't.

OK, if you say so.  Then I'll have to let them know.  I'll tell them you
said what they are doing can't be done, and that they should just stop doing
it.

> > I can manipulate the color image tonality such that
> > it VERY closely matches the tonality from the scanned
> > B&W image.
>
> Show me.  Use Tri-X as the black and white film.  Also, do the same thing
> with a narrowband yellow filter over the B&W exposure.

Why?  That isn't part of the discussion.  The discussion is NOT about
filters.  You are only making it about filters because my premise IS in fact
correct, and you know it, and this is your way of trying to mitigate what
I've said.

Austin