Rent Lens For Canon Camera

Sandy asks…What kind of lens should I rent to take with me to photograph the atmosphere at Bonnaroo?I currently have a rebel t3i, an ef 50 mm 1.8 II, the kit lens and a cheapo wide angle lens extension. I'm going to Bonnaroo in June, and I can't stand the idea of my pictures being less than awesome. I'm not so much worried about band photos as I am crowd, art displays, and just general atmosphere. Mostly people. I intend to rent a wide-angle lens for crowd shots, but anybody have any other

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