Tonight is going to be the biggest full moon of 2009, so why not take a picture! Here’s a way to get you in the ballpark as far as exposure:
The Moony Rule
Full Moon – f/11 @ 1/ISO
Half Moon – f/8 @ 1/ISO
Quarter Moon – f/5.6 @ 1/ISO
Here’s my moon using my EOS 5D, 300mm f/4L, 1.4x II, ISO 100, f/8, 1/100. I started out using f/11, but it was too dark so I dialed it down a bit until I had a proper exposed photo.