In article , Ute Simon wrote:
But there's also the problem of how the computer display reacts. It's not
linear ... the change from 0/0/0 to 10/10/10 probably won't be visible;
the
change from 128/128/128 to 138/138/138 will be quite obvious.

And if you should plan to print your presentation, keep in mind that Gray is
one of the most difficult colors to print on office laser printers. The one
in our office prints a blueish shade (though we compared gradients on a
variety of models before purchasing - this was the most acceptable one), but
I've also seen greenish and pinkish grays. And the gradient might not be
smooth, either.

There are a few tricks for that too. One would be using a lookup table
customized for the printer (at least in Neron's case).

Next, you want to make sure that the printer's resolution is set to some
integral multiple of 300dpi. Test the various driver settings ... some of them
have special modes that use other in-between resolutions or other tricks; in at
least some versions, this can make PPT's gradients and transparency printing
turn out REALLY awful.

And if you have Acrobat, try printing to PDF via Distiller, then printing to
the printer from the PDF in Reader or Acrobat.

PPT's gradients/transparency output to PostScript is braindead. Distiller has
a clever feature called "idiom recognition". It sees the PS, says "Hmm. That
looks like PPT's foolishness." So it tosses out the bad stuff and substitutes
intelligent PS that produces nice, smooth gradients that print well to a wide
range of printers.




==============================
PPT Frequently Asked Questions
http://www.pptfaq.com/

PPTools add-ins for PowerPoint
http://www.pptools.com/