[comp.lang.postscript] Screen percentages

scottla@microsoft.UUCP (Scott LARSON) (06/07/90)

Has anyone every come up with an algorithm or table to determine what
setgray value corresponds to what screen percentage as would be spec'd
by a graphic designer?  That is, our experience is that, if a designer
specs a 20% screen for an element on a page, using a ".8 setgray" does
not give her or him what she or he would expect if the same spec were
given to a commercial print shop.  Of course, the resolution
of the output device would have something to do with this, but still there
must be some rule of thumb for making this conversion rather than just
using trial and error.  If anyone has dealt with this, I'd be interested
in hearing about it.  Thanks.

-Scott Larson, Composition Supervisor, Microsoft Corp., Redmond, WA