Conspiracy lovers argue that the film was shot on Earth and then just slowed down to emulate the minus-gravity effect of the astronauts strolling around on the moon. However, the camera required to do that didn't exist at the time.
Slow motion video can only be done in one of two ways. You can shoot video at normal speed and slow down the playback, or you can film it at high speed and play it at normal speed.
The second way is called overcranking, and produces a smoother picture. In 1969, this was only possible with film cameras and anybody who knows anything about cameras and filming knows the moon landing was definitely not shot with a film camera.
It would actually have cost more to develop all the technology conspiracy theorists say was used to fake a moon landing in 1969, than what it did cost to just go to the moon and do a real moon landing!
