Guys! my level is having prom night soon after our 'o's. And I was asked to be their photographer. Here's the thing, i have a 450D and i have 3lens. 18-55mm, 50mm and 55-250mm. AND i have no idea which lens to bring. I think the prom will be alittle dark so can i have some help on which lens to bring? IF i can bring one, that will be good. cause i don't wanna bring my bag around. AND what kind of settings should i have on my camera?