Get out your copy and paste, because these are the web pages you want to read - from cameras and scanners to lighting and lenses.
I saw someone else ask about photographing coins in a collectors' journal entry, but rather than answer directly, I thought it might be nice to put up an answer for everyone to peruse.
This question is a really common one that I've seen come up many times on the NGC chat boards, and while I'm no expert myself... I know a few people who are. Copy the web addresses below, paste them into your browser, and soak up the info: