rmalarz wrote:
Using the sky as a "gray card" is a good technique. One just has to realize that one needs to use the north sky, in the northern hemisphere. One also needs to realize that the clear sky, which you appear to have had, is one zone higher than a gray card. Your second image looks quite realistic, and contains visually appropriate levels of contrast. You did quite well.
--Bob
Thank you for your kind comment and the exposure information, rmalarz.