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3d video it's one of those things that we're constantly being promised is going

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to be better than ever from hollywood blockbusters that you have to pay an

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extra seven bucks to see in realty to the nintendo 3ds which works without

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even needing those dorky glasses but the consensus among moviegoers and

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gamers alike is that current 3d offerings are more than a little bit

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underwhelming with words like unnecessary distracting and

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sorry nausea inducing used to describe the experience so why is it in 2017

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nearly a hundred years after the first 3d feature film hit the theaters that 3d

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consumer technology is still so terrible

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well it turns out that the human brain is pretty hard to trick into thinking

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that something is actually real and immersive when it's really just a

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projection on the flat surface you see when we look at an object in the

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3d space of the real world

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our eyes are just trying to focus on that object alone but when we're looking

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at a 3d movie or a video game our eyes

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need to stay focused on the screen while they're simultaneously trying to focus

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on the object now because the virtual objects look

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like they're somewhere between the screen and our faces it's not something

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we're all used to doing in the real world and it's a very tough problem for

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our brains to figure out how to resolve and of course the sharply defined edge

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of the screen doesn't help the sense of immersion either meaning the resulting

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3d image looks less than realistic and that's also where the queasiness i

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mentioned earlier comes in so let's talk about some of the problems that

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specifically affect movies the real d branded 3d system that you commonly see

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in movie theaters works with dual projectors and glasses that polarize

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light in different directions for your left and right eye so each eye gets a

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slightly different image to fool your brain into thinking that it's seeing

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something three-dimensional but unfortunately filtering out half the

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light has led to complaints that modern 3d movies are not only unconvincing but

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they're also way too dark to enjoy so given the price a little buyer's

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remorse is understandable home solutions have also been fraught

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with problems requiring bulky powered glasses which you can learn more about

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right up here very expensive television sets pricier

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copies of the same movie or at the very least a halving of the vertical

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resolution so that each eye only sees what it's supposed to

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oh yeah and everyone watching has to look like a dipstick there's also the

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minor matter of how these movies are produced in the first place some films

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are produced specifically with 3d in mind a dual lens stereoscopic camera rig

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that can capture 3d images natively is needed for the best results avatar was a

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notable example of this done correctly and animated films can have this effect

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applied with virtual cameras after the fact now although doing this doesn't

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eliminate all the problems associated with 3d it generally makes for a more

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pleasant experience than the many other films that were actually shot in 2d and

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cheesily converted to 3d later on you

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can think of this a little bit like how video games ported from console to pc

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are so often disappointing which you can learn more about up here well except a

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little worse and speaking of games what about the 3ds

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well thanks to nintendo's use of a parallax barrier which is a series of

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slits placed over the back light illuminating some pixels towards your

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left eye and some towards your right eye there are no brightness issues and you

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don't need glasses but unfortunately the physical slits can severely restrict

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viewing angles which is why the 3d effect doesn't work nearly as well if

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you tilt your screen more than just a little bit when you combine that with

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the system's lower resolution and lower refresh rate than what you get at the

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cinema it isn't surprising that many people were instead clamoring for a

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clamshell style 2ds which of course nintendo ultimately did

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give us and desktop pc gaming in stereo 3d had a similarly short 15 minutes of

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fame in the form of NVIDIA's 3d vision which required a supportive monitor a

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supported graphics card specific glasses and validated games for the best

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experience so it's probably not surprising it didn't take off now with that said with

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the rise of high quality vr headsets like the oculus rift and htc vive

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consumers are beginning to enjoy 3d experiences at high refresh rates

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without flat projection screens that fill their entire field of vision

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helping to alleviate some of the issues we've discussed but with vr tech still

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attempting to catch on with game developers and other content providers i

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do wonder if we'd just be better off waiting for someone to invent a

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real-life version of the star trek holodeck if we really want convincing 3d

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alright guys thanks for watching this episode of techwiki like dislike check

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out our other channels we're always doing super fun things over on Channel Super Fun and leave a comment with your

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suggestions for future videos maybe you want to hear more about tech that does

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work well that isn't horrible modern 3d

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or whatever so just let me know and also don't forget to hit subscribe