Inside is varied
machinery, but I will not tire you with a description of it.
Sufficient to say that there are two wheels, or reels. On one--the
upper--is wound the unexposed film. One end of this film is fastened
to the empty, or lower, reel. The film is passed back of lens, which
is fitted with a shutter that opens and closes at the rate of sixteen
times a second.
Turning a handle on the outside of the camera operates it. So that
when the scene is ready to be photographed the actors, whether men or
animals, begin to move. The handle turns, and the unexposed film is
wound from one reel to the other, inside the camera, passing behind
the lens, so that the picture falls on it in a flash, just as you
take one snapshot. But, as I have said, the moving picture camera
takes snapshot after snapshot--sixteen a second--until many thousands
are taken, so that when the pictures are shown afterward they give
the effect of continuous motion.
The film is moved forward by means of toothed sprocket wheels inside
the camera, the shutter opening and closing automatically.
When the reel of film has all been exposed, it is taken to the dark
room, and there developed, just as a small roll from your camera
would be.
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