I currently use a Nikon d5000. We are going up to the mountains next month to look at the fall leaves and pick apples. I really want to rent a lens to use on my camera to take pictures of my daughter and all that stuff. Any suggestions? I've been reading that many lens aren't compatible with my camera so I'm not sure what I should get. I was going to get a 50mm but it seems like that they aren't compatible with it. Any suggestions?