He seems to talk directly to the audience as if he were standing just outside the film frame.
A film frame that is exposed for 15 seconds will receive 750 times more light than its 1/50th of a second counterpart.
In this shutter design, the whole film frame is exposed at one time.
The film frames were then printed on paper, showing a model made up of the painted black lines.
The reduced image circle does not cover the full 35mm film frame.
"3:2" pull down means that a film frame is shown for three TV fields.
The next film frame is shown for 2 TV fields.
The frame line between the silent film frames was very thin.
Once a film frame is scanned, it's very easy to divide it up into different video fields.
The image of this scan is focused with a lens onto the film frame.