Bubble wrote in post #6127886
it is still full moon tonight. I just took the pic. Beautiful moon.

The moon is a sunlit object, and requires exposures like any other object in direct sun. Both the sun and moon are subject to having the amount of light that reaches your camera influenced by the amount of atmosphere through which it passes.
That is why both the sun and moon change color as they near the horizon. The blue end of the spectrum is being scattered out of the light by the air, so that light is lost to your eye or camera. Makes for nice colors, however.
So the moon is brightest when it is directly overhead. I actually don't know just how many stops brighter it is overhead compared to on the horizon, but I suspect is a variable you would need to take into account. Just spot meter it, and you will know what to do.