The moon is an extremely difficult subject to photograph. If you set your exposure according to the camera meter, then you get some detail in the night sky and foreground, but the moon is a solid white circle with no detail. If you underexpose by three or four stops, then you get the "cheese" of the moon, but no detail in the sky or foreground. The moon also moves so quickly that it requires a relatively fast shutter speed. When it's dark outside, the only way to get a fast shutter speed is to raise your ISO or film speed. However, high film speeds are grainy or noisy. The choice is yours.