My camera is a Nikon D90, and I only have the one it came with which is an 18-105. Eventually I'd like to get something up to 300mm, a fish-eye, and a lower end fixed lens for portraits. Once you use whatever lens you have now for a while you'll get a feel for what you'll want in the future for lenses, but I'm guessing that whatever is on there now is going to work well for 95% of applications. I can't stress the UV filter enough though, they're only about $10.