Digital BW, The Print

> If the original image is real color data, not B&W scanned as RGB, yes.
> Doing as you suggest to a B&W image scanned in RGB doesn't work.

That's what Mark and I were trying to say.

> But that begs the question, why?  If you are drastically altering the
> reality of the tonality, that more becomes art than photography, at least
in
> my book.

Funny you should say that. I've photographed art for a book (not your book)
as well as art magazines, that required a bit of experimentation with colour
filters to achieve a representative B&W rendition. They were technical
exercises, but if you want to call it art, that's ok with me.

Another instance where one could use the channel mixer to create "art" would
be when shooting a portrait and you want to minimize acne or an excessively
ruddy complexion.