I am new to photography and I would like to know what would be a good, sharp lens for me to use? I asked about a couple of weeks ago and some of you use Canon 50mm f/1.8. What type of shots is this lens use for? I shoot mainly close-ups, inside & outside. I also shoot indoor & outdoor sports...

I'm going to start a new thread on this one. I am putting together a 30D package for myself and I've been trying to get a good idea of what lenses to start with. I'd prefer to stay at two lenses, although I am starting to think it may take three to really have a good zoom and a good wide...