Or a lack of... well.
Quote: As Rene points out, that's not all: The cameras had no white meters or view ponders. So the astronauts achieved this feet without being able to see what they were doing. There film stock was unaffected by the intense peaks and powerful cosmic radiation on the Moon, conditions that should have made it useless. They managed to adjust their cameras, change film and swap filters in pressurized suits. It should have been almost impossible with the gloves on their fingers.
From some moon hoax site..
Also, when you're on the moon you're generally shooting sunny 16 so no wonder the stars aren't showing.