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3d video it's one of those things that we're constantly being promised is going
to be better than ever from hollywood blockbusters that you have to pay an
extra seven bucks to see in realty to the nintendo 3ds which works without
even needing those dorky glasses but the consensus among moviegoers and
gamers alike is that current 3d offerings are more than a little bit
underwhelming with words like unnecessary distracting and
sorry nausea inducing used to describe the experience so why is it in 2017
nearly a hundred years after the first 3d feature film hit the theaters that 3d
consumer technology is still so terrible
well it turns out that the human brain is pretty hard to trick into thinking
that something is actually real and immersive when it's really just a
projection on the flat surface you see when we look at an object in the
3d space of the real world
our eyes are just trying to focus on that object alone but when we're looking
at a 3d movie or a video game our eyes
need to stay focused on the screen while they're simultaneously trying to focus
on the object now because the virtual objects look
like they're somewhere between the screen and our faces it's not something
we're all used to doing in the real world and it's a very tough problem for
our brains to figure out how to resolve and of course the sharply defined edge
of the screen doesn't help the sense of immersion either meaning the resulting
3d image looks less than realistic and that's also where the queasiness i
mentioned earlier comes in so let's talk about some of the problems that
specifically affect movies the real d branded 3d system that you commonly see
in movie theaters works with dual projectors and glasses that polarize
light in different directions for your left and right eye so each eye gets a
slightly different image to fool your brain into thinking that it's seeing
something three-dimensional but unfortunately filtering out half the
light has led to complaints that modern 3d movies are not only unconvincing but
they're also way too dark to enjoy so given the price a little buyer's
remorse is understandable home solutions have also been fraught
with problems requiring bulky powered glasses which you can learn more about
right up here very expensive television sets pricier
copies of the same movie or at the very least a halving of the vertical
resolution so that each eye only sees what it's supposed to
oh yeah and everyone watching has to look like a dipstick there's also the
minor matter of how these movies are produced in the first place some films
are produced specifically with 3d in mind a dual lens stereoscopic camera rig
that can capture 3d images natively is needed for the best results avatar was a
notable example of this done correctly and animated films can have this effect
applied with virtual cameras after the fact now although doing this doesn't
eliminate all the problems associated with 3d it generally makes for a more
pleasant experience than the many other films that were actually shot in 2d and
cheesily converted to 3d later on you
can think of this a little bit like how video games ported from console to pc
are so often disappointing which you can learn more about up here well except a
little worse and speaking of games what about the 3ds
well thanks to nintendo's use of a parallax barrier which is a series of
slits placed over the back light illuminating some pixels towards your
left eye and some towards your right eye there are no brightness issues and you
don't need glasses but unfortunately the physical slits can severely restrict
viewing angles which is why the 3d effect doesn't work nearly as well if
you tilt your screen more than just a little bit when you combine that with
the system's lower resolution and lower refresh rate than what you get at the
cinema it isn't surprising that many people were instead clamoring for a
clamshell style 2ds which of course nintendo ultimately did
give us and desktop pc gaming in stereo 3d had a similarly short 15 minutes of
fame in the form of NVIDIA's 3d vision which required a supportive monitor a
supported graphics card specific glasses and validated games for the best
experience so it's probably not surprising it didn't take off now with that said with
the rise of high quality vr headsets like the oculus rift and htc vive
consumers are beginning to enjoy 3d experiences at high refresh rates
without flat projection screens that fill their entire field of vision
helping to alleviate some of the issues we've discussed but with vr tech still
attempting to catch on with game developers and other content providers i
do wonder if we'd just be better off waiting for someone to invent a
real-life version of the star trek holodeck if we really want convincing 3d
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