I'd love to start taking shots like that, I'll post up a few of my favourites after work today. I'm thinking of getting a 10-22mm lens, good or bad for nightclubs?
I'm using just the kit lens right now because its the widest I have, it does a good job but nothing EPIC like your shots on the first page. (I haven't much time to surf through this whole thread yet unfortunately).
Also is it worth buying a off camera flash cord? I've got a 430EX II and love it, yet when I take photos of people sitting infront of a wall the shots taken just turn out plain and boring, which isn't a good look for the subjects, me, the photography company I work for, or the club.
I would *not* recommend a 10-22mm. I have one myself and have only used it once in a night club, and really wasn't too pleased with the results.. it's simply *too* wide-angle, unless you always want to shoot at 22mm. Mind you this is for portrait shots only. If you want to get fun "whole club" shots, this lens is great, but really for a "capture-all" (i.e. mostly portrait) lens you'd want either a 17-55 or 17-40, etc.
Plus the fact that it's 3.5-4.5, doesn't let you get the non-flash/ambient artsy shots you are probably hoping for. Don't get me wrong, the 10-22 is a FUN lens (hands down AWESOME for landscapes), just not for a night club, IMO.
If anyone thinks otherwise says they've used the 10-22, please feel free to show me some fine examples.