It was once quite rare to hear of a 3D film coming to theaters, but it has become common in recent years. Although the concept of 3D films has been around since the 1950's, it was not until very recently that technology has truly caught up with the imagination of film makers and producers who try to create a visually immersing world for their audiences. By using special filming and presentation techniques and equipment, film makers are able to trick your eye into thinking that a plain movie screen is actually projecting three dimensional images when you watch a 3D film.
The key concept behind creating a 3D film is recording the images the same way your eyes see them, using information collected from both the left and right eye to create one image; this is called stereoscopic vision. To get the proper visual effect, 3D movies must be filmed using cameras with two side by side lenses. Movies made with computer technology, like Avatar, can also be produced in the same way to create a stereoscopic film. When you watch a 3D movie, you are really looking at both of the images captured by each camera lens at once; wearing special 3D glasses is what allows you to process both images at the same time.
Blue and red 3D glasses were worn for many years whenever a person wanted to watch a 3D film. Each of the two projections of those older 3D movies had been treated with either a red or blue light filter which interacted with your glasses and let your brain decipher the three dimensional effect. Although this created the right optical illusion, having to use red and blue light limited the colors that could be used in the films.
Polarized light is the answer to those issues, and modern 3D films use these vibrating light waves. Though you only see one image, there are actually two projectors sending out one vertically and one horizontally polarized image during the 3D film.
Your 3D glasses prevent one kind of light wave from entering each eye so that your left eye sees only horizontal waves and your right only sees the vertical ones. Without this technology, 3D movies would not be as realistic; filtering light waves gives you the illusion of depth that makes a 3D film pop off the screen and come alive. - 40726
The key concept behind creating a 3D film is recording the images the same way your eyes see them, using information collected from both the left and right eye to create one image; this is called stereoscopic vision. To get the proper visual effect, 3D movies must be filmed using cameras with two side by side lenses. Movies made with computer technology, like Avatar, can also be produced in the same way to create a stereoscopic film. When you watch a 3D movie, you are really looking at both of the images captured by each camera lens at once; wearing special 3D glasses is what allows you to process both images at the same time.
Blue and red 3D glasses were worn for many years whenever a person wanted to watch a 3D film. Each of the two projections of those older 3D movies had been treated with either a red or blue light filter which interacted with your glasses and let your brain decipher the three dimensional effect. Although this created the right optical illusion, having to use red and blue light limited the colors that could be used in the films.
Polarized light is the answer to those issues, and modern 3D films use these vibrating light waves. Though you only see one image, there are actually two projectors sending out one vertically and one horizontally polarized image during the 3D film.
Your 3D glasses prevent one kind of light wave from entering each eye so that your left eye sees only horizontal waves and your right only sees the vertical ones. Without this technology, 3D movies would not be as realistic; filtering light waves gives you the illusion of depth that makes a 3D film pop off the screen and come alive. - 40726
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