What do you guys think about this lens? I am looking for an affordable lower light lens that can be used to do weddings, everyday shots, some portraits. This is mainly a lens to practice and hone my skills more in many areas dealing with people. I really want a few primes, but I won't be able to afford a new camera body until next year most likely. Switching lenses at a wedding or at some time sensitive event may make me miss some shots, which is whey I'm considering this lens. Has anyone had good/bad experiences with this lens? Or perhaps someone can recommend a different one to consider. Thanks!