I am wondering what lens to use now! I have the 18-70mm F3.5-F5.6 for my Sony a200 and I'm bored with it. I want to move on to another lens. Unfortunately, and this is probably a problem with a lot of fledgling photographers, I'm not willing to spend a lot to get another lens. Anyone have an suggestions for another lens that is good for someone who is starting to learn and doesn't want to be completely overwhelmed? I'm willing to spend around $500.00 to get one. Thanks in advance!