>>4499383Illuminated part of Moon is a dark grey subject in bright sunlight. Full Moon is considerably brighter than half.
I don't recall what I used when last snapped moon years ago but I'd start from ISO100 1/400 f 5.6.
(Oct 4 2004, 16:33 at 68 N. Pentax Optio 43WR, ISO 50, f3.9 1/160, digital zoom 4)