How Does 3D Work?

3D is back! This is not your father's 3D. This is aStereoscopic and true 3D would be more like a
technologically advanced 3D that once you see it youhologram that is standing in front of you and I don't
WILL want to see more! It seems like everywhere wemean the CNN kind. I was hooked even then!
look 3D movies, TV shows in 3D, even 3D for yourAfter that 3D came and went showing up in several
iPhone!!!incarnations during the 50's, 60's, 70's & the 80's.
But, there are as many questions as there are 3DTitles like House of Wax (1953), Robot Monster (1953),
applications. How does 3D work? What makes itCreature From the Black Lagoon (1954), Dial M for
different from 3D that came out before? What are allMurder (1954) , Flesh for Frankenstein (a.k.a. Andy
those different glasses? Can I watch 3D withoutWarhol's Frankenstein) (1973), Jaws 3D(1983) and
glasses?Captain EO (1986) to name a few.
First, a little history. The first 3D started millions ofNow fast forward to November 2008 and the first
years ago with man. Yes, we all see things in 3D. All3DX Festival takes place in Singapore. Some of the
humans have binocular vision. What that means is thattop luminaries from around the world attended the
we have two eyes separated by a space of 2-33DX Festival to promote 3D media, including: Jeffrey
inches. This enables us to perceive depth and see theKatzenberg, CEO of DreamWorks Animation; Mark
world in 3D. This separation causes each eye to seeZoradi, president of Walt Disney Studios Motion Picture
the world from a slightly different perspective. TheGroup; Jon Landau, James Cameron's producer on his
brain combines these two images into one. Itnew 3 D movie, Avatar; and other directors who are
comprehends the spatial differences and uses them toall involved in 3D projects: Robert Zemeckis, James
calculate distance. This is how we sense depth andCameron, Steven Spielberg, Geroge Lucas, and Peter
distance.Jackson.
A simple way to understand this principle is to holdThere are different types, or flavors, of 3D. Some put
your thumb up at arms length and cover one eye with3D technology into glasses while others put it into a
your hand. Then try putting your hand over the othermonitor or tech application. Computers or even the
eye. As you switch between open eyes you shouldiphone can handle 3D but require some additional
see your thumb "jumping" back and forth against theactive components , such as software and
background.applications that are just now being created.
Stereoscopy was invented in 1838. There is a lot ofThe first time 3D technology was created it used the
debate about the first 3D film but "L'arrivée dutraditional red and blue glasses. This is called anaglyph
train" filmed in 1903 by the Lumière brothers.and is very cheap in both cost and performance.
They were the inventors of cinema and it is oftenFortunately, with the rise of technology advancement
referred to as the first stereoscopic movie ever made.we have many better ways of displaying 3D media.
When it was released, audiences panicked becausePolarized glasses is another common type of 3D
they thought the train was about to crash right intoglasses. These are the 3D glasses that you will get at
them! The funny thing about it is that it was probablyIMAX or in other 3D movie theaters. Although they
on of the first remakes. The film was remade fromwork better than the old type red and blue glasses, this
the original that came out in 1895! And you wondermethods requires two projectors in the theater and
why Hollywood keeps remaking films. It's practicallyadditional layers to the monitor for the technology to
born to it!work properly. The onetime theater set-up expense
If you are like me then you probably experienced 3Dand additional cost for the polarized glasses may
for the first time in your life with that old Viewmastermake this method less appealing.
viewer. You stuck that funny round thingy with the little3D screens with no glasses is here today. There are
slides on it into your Viewmaster, plastered your eyesdifferent ways that the 3D screen technology is built.
to the two eyepieces and tilted towards the livingOne way is using multiple screen layers like the
room table lamp. Suddenly, you were transported to apolarized glasses mentioned above, which is expensive
million places where you felt you could reach out andbut you do not need specialized glasses to view the
touch things in 3 dimensions. Never mind that it is really3D on the screen.