"Mark Jackson" wrote in message
...
"Jo [actually Alan] Taylor" writes:
You are correct in saying I don't think it's as simple as that...
but
not for the right reasons.

a. Cyan, Magenta and Yellow are not paint primary colours but
transparent
printers' ink primaries and rely on overlay not pre-mixing for the
effect.

Sorry to ask this at this point, but does it make any difference as to which
colour is put down first?

Paint primaries are red, blue and yellow and, in emulsion paint, are
opaque.

Can this be explained to me? I must add that I am some what colour blind
here. I was diagnosed as red green colour blind as a child and it has
haunted me since.
And here is me, interested in photography :-)
I get along though ;-)
My wife tells me what I have done wrong in PhotoShop, but I wish I did not
have to depend on her.

Alan Taylor made this same argument nearly a month ago here.
Eventually he made some example images available on the Web;
unfortunately viewing them required one to be a member of the Yahoo
BritArt group. I have rehosted them with his commentary; see
http://www.alumni.caltech.edu/~mjackson/color.html.

I looked at that, but found some of the darker colours hard to define
:-(((((

Dave