When Chuck goes to his girlfriend`s house, she opens the refrigerator and the shot shows her daughter`s photos. If you see closely, on the right-bottom picture appears a little red light, like the red light of a camera.
Movie or 35mm film cameras do not have red lights. Only television studio cameras do to tell someone which camera is on them at that moment. Since movie making usually involves just one camera per scene or shot there is no need to tell people what camera is on them. They're not supposed to be looking anyway!