Found a photography panel posted on YouTube from Anime USA 2009 with Nicole Ciaramella and Judith Stephens . I've met Judith at various cons around the country - I think she travels to much more cons than I do !
I've only attended one cosplay photography panel before at AOD (Animation on Display) so I'm curious to attend more - unfortunately, I'm usually working during the panels in artist alley but thanks to YouTube, I can watch them ! User outlawlb uploaded 7 videos - each is about 10 minutes but they overlap each other so the beginning of each segment repeats a bit from the previous segment.
Very good basic information here. They really detail some of the nitty gritty. Unfortunately, the video cuts off in segment 7 and I don't think it was the end of the panel yet.
If you have no clue about photography, take a listen, you'll learn some stuff.