I want to know if I would be getting ripped off if I bought the cheaper lens? Expensive Lens:http://www.amazon.com/Canon-24-105mm-USM-Lens-Cameras/dp/B000AZ57M6/ref=sr_1_1?ie=UTF8&qid=1367979465&sr=8-1&keywords=canon+ef+24-105 Cheap Lens:http://www.a...
