Camera Hacker: Thoughts and procedures on hacking camera equipment, accompanied by product reviews.
Classic Camera Profiles: Advice on camera selection and profiles of collectible cameras, focusing on Nikon and Leica rangefinders.
Fargo Enterprises, Inc.: Searchable directory of camera repair companies, camera repair manuals and parts, and camera manufacturers.
Free Camera Instruction Manuals: Scans of owner's manuals including Exakta, Canon, Kodak, and Zenit.
HowStuffWorks: Autofocus Camera: Illustrated descriptions of active and passive autofocus technology used in cameras, with related links.
HowStuffWorks: How Cameras Work: Illustrated tutorial in everyday language. Includes information on single reflex (SLR) and pinhole cameras.