As many people have noticed, the new trend in both the box-office and home-theatre is 3D technology. The largest grossing movie of all time, Avatar, was the one that everyone had to see on the IMAX screen in full HD 3D glory. I for one didn’t experience that (I wish I did), but the result of the success of that film was the new glut of 3D-HD TVs that are now available for the home.
What you might not know is that the technology behind what you may have seen at the theatre is quite different than the 3D technology you’d have at home. This means that the glasses you stole borrowed from the Avatar screening will not work with your new glorious 3D-HDTV… Let me explain:
There’s a little science involved here so be forewarned – If you purchase a LCD 3D-HDTV, it is likely to have polarizing filters built into it. The glasses you would use in the theatre ARE the polarizing filters. “So what?” you might ask? This leads me to the main reason I will never own a 3D Television. The glasses required to view 3D on a LCD or Plasma TV (LC Shutter Glasses) have what are called “micro-shutters.” Small shutters inside each lens that open and close at a rapid rate to create the 3D effect with televisions with polarizing filters. Those glasses…. $300-$450 for each pair. That means that for a family of 4, you could be paying up to $1000 just to watch TV with a 3D effect. These glasses are breakable, can get lost or stolen and in my case, I paid $3000 a few years ago (laser surgery) to NOT WEAR GLASSES to watch TV…..
3D is made possible by a visual effect called Stereopsis. The eyes of an adult human lie about 2.5 inches apart, which lets each eye see objects from slightly different angles. The two images on a 3D TV screen present objects from two slightly different angles as well, and when those images combine in the viewer’s mind with the aid of the glasses, the illusion of depth is created. The old 3D glasses had red and cyan colored lenses which create two different colored images. This image, called an anaglyph creates the illusion of depth when a stereoscopic image is viewed.
3D requires people to sit directly in front of the screen to get the best, rewarding 3D experience. Viewers of Avatar who were far off to the left or right of the screen did not have the same rich experience as those who were lucky enough to sit in the middle of the theatre. Perhaps the best review of this was Wilson Rothman’s (from Gizmodo) review of Avatar. Unless you have a home-theatre room which allows for all of your guests to have a perfect head-on view of the screen – the majority of people (myself included) will not enjoy the 3D experience.
If I am ever back in the market for another TV, it’ll probably be a 60″ Plasma or something that makes watching hockey (or Avatar) more epic than on my current 42″ Sony…. 3D just doesn’t add up for me.


