About DOF.. it's not important, but everything is wrong lol.. In order to get a full moon photographed and exposed correctly you should use a fast shutter speed (or a very small aperture, or both). The moon is very bright compared to objects on earth at night, so if you want to capture the texture of the moon you have to under expose everything else, or capture the moon during the day (close to same amount of brightness in all objects). So realistically speaking, this render is impossible in real life. If you have the full moon in a night shot where you can see details of earth objects (buildings, trees, people) the moon would look like a white spot with no texture.
So, ignoring the exposure thing, the camera in this render has a large aperture (you can see the grass behind the pumpkin going out of focus already) so the moon being so far away, even if it's super large, it goes out of focus too. If you can see details at all in its surface it's because of the scale of the moon and those details, but in reality everything is super out of focus. How much? well I really don't know, I would guess it should be even more out of focus but I'm not entirely sure, and it really doesn't matter as this is not supposed to be photo realistic, just look nice
shooting stars.. yeah you're probably right too
@podperson (Even though they're much closer to earth, as they are rocks entering the atomsphere).. but again this is not a photo realistic effort
in case anyone finds it fun to see the scene