For this shot of the moon I used the Looney 11 rule. Like the name suggests you use an Aperture of f/11. This makes the moon look the best. I really love the way the full moon looks. And everytime I imagine, that there were humans up there, it absolutely blows my mind.

Lens: Canon EFS 55-250mm f/4-5.6 IS STM
Focal Lenght: 250mm
ISO: 400
Aperture: f/11
Shutter Speed: 1/500