This material may not be reproduced in any manner without permission of the author, Lewis Downey. That said, permission is typically easy to acquire for non-commercial purposes.

Permission is granted to make a hypertext link to any page with a '.html' suffix within the directory structure of photography.cicada.com or www.zonesystem.com

Linking to any CGI or other program running on our server without permission is strictly forbidden. Also forbidden, is linking to any image directly; you may link to complete pages which include images, but you may not link directly to a file with a '.cgi', '.acgi', '.fcgi', '.gif' or '.jpg' suffix.