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11 4D
Reaching Out to Grab These glasses had a blue lens on A film screening that
combines a 3D movie
3D Movies the right eye and a red one on the with physical effects like
left eye. The blue lens only let blue
light in. The red lens only let red wind, rain, smells, and
light in. People’s brains combined vibrations.
what their eyes saw separately. This • Most movies are 2D,
produced the illusion of 3D imagery. appearing flat.
• Special 3D glasses have
Using the red and blue filters caused
color issues in 3D movies. Today one blue lens and one red
lens.
3D movies are shot using polarized • Polarized 3D glasses have
light. Movies are still shot through lenses that filter different
two different filters. But instead wavelengths of light.
of using color, they use different
wavelengths of light. Moviegoers
wear polarized 3D glasses to see
3D effects.
Louis and Auguste Lumière were life effect even further. It was one of
French inventors who shot many the earliest movies to use an effect
films. One of the first was The called stereoscopic vision.
Arrival of a Train (1896). It simply
Movies using this effect were shot
showed a train coming toward
on two strips of film. One was shot
audiences. Even though it was two-
through a blue filter and the other
dimensional, shown on a flat movie
through a red filter. Both strips
screen, people worried they were
were projected onto the screen
about to be run over.
at the same time. This gave the
The movie The Power of Love movie a blurry look. That is, unless
(1922) tried to take this real- moviegoers wore special glasses.
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