But 3D isn’t as easy to get used to as, say, getting a surround-sound system or moving from 4:3 to widescreen. Why is that? Well, it’s complicated, but worth taking the time to understand. Moreover, like any other new technology, 3D is not without its potential risks, and of course studies will have to be done to determine the long-term effects of usage, if any. For now, though, it must be sufficient to inform yourself of the principles behind it and make your own decision.
Let’s just have a primer in case you’re not familiar with how 3D works in general. There are a few major points worth keeping in mind. We’ll start with the basics. How do you see in 3D to begin with? Here’s a crash course on your visual system.
How depth is determined in your visual system
Even if it feels silly, just indulge me here: close just your right eye. Now just your left. Now your right. It’s like in Wayne’s World: camera one, camera two. You must have noticed that things change position a bit. This, of course, is because your eyes are a few inches apart; this is called the “interocular distance” and it varies from person to person. Note also that when you look at something close, objects appear in double in the background. Look at the corner of the screen. See how the chair or window back there is doubled? It’s because you’re actually rotating your eyes so they both point directly at what you’re focusing on.
Read more: CrunchGear
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