[Oh I see, I do have to get a calibrated system myself and to be honest I really don't look at the histogram that often only because a majority of photographs, even great photographs, isn't always tonally even like that one shows. Just like everything else the histogram is more of a guideline to me than a rule. Even though the histogram is now even, my sky and clouds is now a bit blown out and isn't holding nearly as much detail as I'd like. I really appreciate your help InFocus.
Vince, the histogram isn't about getting it balanced, it's about the right and left side. I would probably pull back a little on the right side to keep more of the detail in the clouds, but I like the white clouds rather than the gray clouds in your first run.
I check the histogram on almost every series of shots I take and adjust my exposure accordingly. I shoot as far to the right (higher exposure) as is practical and adjust in post. If I am wanting to get the best image SOOC I will always look at the histogram, for me it is much more important than any metering system because it tells me exactly what the sensor is seeing and I can adjust for what I want in the image.