Digital BW, The Print

Keith writes:

> Yes,  which can have a maximum of 256
> discernible levels.. That's all.. The
> human eye won't see more than that.

FWIW, luminance discrimination in the human eye varies with color and
position in the visual field.  I believe it is highest for blue overall.
But 256 levels is probably a good average figure.

> Read the part of my earlier post on how people
> have been "talking past each other on this"...

I see lots of young males burning off testosterone, and little else.  Have
fun.