I agree that Clark can't see anything that isn't already there. If the door in the film was firmly closed all the time it was filmed, then Clark can't see through it. Of course, if it was very briefly opened a crack, then Clark can see what was actually seen through this crack, even if it appeared too briefly for others to see. But he can't see as much as he would have been able to if the door had opened widely.

It is the same thing that allows us to see no more of a picture than was there already. If you click on this link , you can see a picture of galaxy M 101 whose file has a size of 290k. But if you click on this link , you will find a picture of the same galaxy, but in this case the size of the file is only 22k. There is no way you can see as many details in the second picture as you can in the first.

Clark won't be able to see pixels in a film that doesn't have those pixels already.

Ann