Having managed to find the ISO settings, I can now take pictures of the Moon without it over-exposing. I found this website with labels for the same picture - well, mine is just a few hours after the one shown. The big dark patch is the Mare Crisium. Mare is Latin for sea. That's what these features looked like to the first observers with telescopes. Now we know that they are darker, newer rocks, probably lavas released on impact.
