Which is correct?

Ori: You know the sign "No Smoking" prohibits you (to) FROM smokING (there). Now we want a sign that indicates you not (to) take photos (there).
Which is proper English?

1) No Photographing
2) No Taking Photos
3) No Using Cameras
4) No Taking Pictures
5) No cameras/photos allowed

Just this? Always since the birth of cameras?

Both 'proper' and 'correct' are loaded terms that have little value when one discusses language, Ori.

All your examples are correct, ie grammatical, but they aren't the ones chosen for these situations. The trend does seem to be as Region portrayed.

On the George Washington Bridge, there are signs every fifty yards or so that say: