I'm having a little problem in terms of balencing exposure, especially outdoors. Often when I'm taking a picture the exposure which best shows the subject or landscape is very different from the one which best exposes the sky or background. The other day for instance I was taking a picture of some palm trees and in the back ground was a building and the sky. In order to properly expose the palm trees I had to over expose the buildings and sky. What do you guys do to combat this?