Digital BW, The Print

For those who may be interested, I have written a JavaScript that 
creates selections in an image for each of the % brightness ranges of 
0%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% and 100%.  These 
percent brightness correspond to the Zone System's ranges of Zones 0 
through Zone X.  The selections are stored in the image as alpha 
channels.  The script will use a default tonal range to create the 
selections, or it can use one you specify.  As a reference, the 
histogram shows us the distribution of our image's tones.  This 
script shows you what pixels fall into a specify zone.  You may 
download the script (free) at 
http://www.zuberphotographics.com/page_Downloads.htm  It is the last 
item in the list.  The download and usage instructions can be found 
here  http://www.zuberphotographics.com/page_Support.htm  If you 
download it, do not put it in the Plug-Ins folder as it is not a plug 
in.  It goes in the Presets/Scripts folder.

The JavaScript was written on a Windows/Photoshop CS platfrom and 
also tested on a Windows/Photoshop CS2 platform.  Being JavaScript, 
it should :-) also work on a Mac, but it has not been tested on a 
Mac.  I doubt the script will run in Photoshop 7.

Hope you find it useful.

Thomas

p.s. I am posting this message in a couple more forums I belong to.  
So I apologize if you read it more than once.