These links may be useful in such a discussion if considering high resolution cameras.

Following material may be of interest.

Imaging standards

Library of Congress - tech specs etc.

http://memory.loc.gov/ammem/prpsal9/coverpag.html

specifically
 
http://memory.loc.gov/ammem/prpsal9/rfp9c.html#G

Imaging Production Systems at Corbis Corporation

http://www.rlg.org/preserv/diginews/diginews2-4.html#technical

Joint RLG and NPO Conference on Guidelines for Digital Imaging

http://www.rlg.org/preserv/diginews/diginews2-5.html#feature1

Selecting a digital camera - Cornell Museum Online project.

http://www.rlg.org/preserv/diginews/diginews2-6.html#technical1

----------
From:   M.E. Woodruff[SMTP:[log in to unmask]]
Reply To:       Museum discussion list
Sent:   Wednesday, 5 May 1999 12:37 AM
To:     [log in to unmask]
Subject:        Digital cameras

I am planning to purchase a digital camera and use it for cataloging
purposes to photograph objects and add a digital image to my database.  I
also hope to use this camera to photograph events (lectures, education
programs etc.).   I have looked at both the Nikon Coolpics 900 and 950 and
the Kodak DC 260 and 265.  Has anyone used these or would like to recommend
another camera.  (I have already checked the museum-l archives.)  Thanks in
advance.

Mary Woodruff
Photo Archivist