In general, photography contracts, whether on a handshake or signed, involve two dimensions in effort: everything having to do with shooting and editing photographs; everything having to do with printing and distributing photographs or associated files.
Within the industry, this simplifies to 1) “shooting costs and fees” and 2) “art sales and licensing”.
At the moment, only my wedding program is simple: I shoot for fee (RAW files, for the technically minded) and the bride and groom get a DVD packed with print-worthy and print-ready JPEGs that may then be printed at will, resized for the web, and distributed for personal purposes without further interest on my part.
Nice.
Everything else gets complicated.