One problem I run into on a regular basis is that I tend to wash out the sky in my images. Unfortunately, I do not have a UV filter for all of my lenses which tends to eliminate this problem. I have started to use the gradient filter in Lightroom 3 to add some of the color back into the sky. In the process of doing so I did darken up the treeline quite a bit. Any thoughts or ideas to fix this problem? Thanks you for your assistance.