From Start to Finish
This is the photograph that I took at the back of the Medici Castle in Florence, Italy. Notice how the top left side of the pix is way lighter then the bottom and right side of the photograph. (Ansel Adams said "there is no perfect negative". And likewise there is not perfect digital image).
Photographer and friend Gorden Bowie or Boise,ID gave me some great instructions over the phone on how to better use the gradient tool more effectively. Notice how I was able to balance the light in this second image compared to the original photograph right out of the camera. I also rendered the color more like what my eye perceived when looking through the camera.
Here is the final image from a part of the Medici Castle photograph that I really like. This cropped area is what attracted me to take the photograph in the first place.