That's what you get when you're a backup photographer. Face it.nickmak said:Well, how would u feel if u got the right angle and the moment and just being a bit slow on the finger-work, and then when u all done, the shot is still there, you end up staring at the main photographer's butt? Great isn't it?

Just put yourself in the shoes, you have a job to deliver, and truthfully, you'll do ANYTHING to get it delivered, including showing people your butt. And frankly, I have *NO* qualms in doing just that if it's me. Additional unofficial photographers can kiss my butt if I have to get my butt into their frames. I won't do it just for doing it, but one has to know where their stand is.
As long as you're not official, you have nothing to complain about kissing butts.
If you think you would have done better, you should have offered your services instead of being a backup. Else you jolly well stand behind and kiss butts.
I would feel it's right for others to take shots as long as they don't get into the main photographer's way. I've seen unofficial photographers snatching attention and getting the couple to pose right under the official photographer's nose when the main photographer was about to pose the couple.
How would you feel? Every additional len/camera that points in the same direction as the main photographer, somebody in the group shot is BOUND to get distracted and look away. Let's just be courteous and let this end here. Nobody's right and nobody's wrong.
If you ever shoot official, let me tag along and I show you how an unofficial photographer can do very irritating things to turn official photographer off to an extent as your teachers' photographer.