Keep doing that and you'll go blind
abc.net.au
Keep doing that and you'll go blind
1–10 of 46 posts
Re: Keep doing that and you'll go blind
#2The article mentions binocular dysphoria quite a bit. The wikipedia article is amusing: http://en.wikipedia.org/w/index.php?title=Binocular_Dysphori... . It appears the term was made up.
Re: Keep doing that and you'll go blind
#3[deleted]
Re: Keep doing that and you'll go blind
#4From the article:
The Wikipedia entry on depth perception (an excellent read) lists ten different cues that your brain uses to figure out exactly how far away something is. Parallax is just one of them. Since the various movie and television display technologies only offer parallax-based depth cues, your brain basically has to ignore several other cues while you're immersed in the world of Avatar. This is why the 3D of films doesn't feel quite right.
I agree that 3D films often feel a bit weird, but I'm not 100% sold on his idea of why this should be. The Wikipedia article names many visual cues that are present in 3D movies as well (e.g. relative size, perspective, texture & lighting etc.). It seems conceivable that your brain is "tricked" and has to adapt to the new situation, I just don't know if his reasoning is valid.
Re: Keep doing that and you'll go blind
#5Doesn't normal 2D TV also force you to ignore even more depth perception cues? We still have relative size, parralax, etc telling us that the things on the screen are at different depths.
Re: Keep doing that and you'll go blind
#6I wish we could just move to holograms. What's holding us back exactly? I could never find a straight answer.
Re: Keep doing that and you'll go blind
#7I really wish there was a way to do 3D that allowed your eyes and brain to naturally do what they do in the real world, though perhaps we're a long way from that? Anyone familiar with or doing any research on better mechanisms for 3D?
I have yet to experience any sort of 3D entertainment that isn't (at least initially) disorienting. The need to wear glasses constantly ruins the experience. But even beyond that, the unnatural way the camera "forces" you to focus on things in the foreground also feels wrong to me and breaks the illusion. If the main character is front and center, but I want to stare at the wall right behind him, it shouldn't be blurry. But it often is blurry because of the camera's depth of field. You sort of feel like an unseen hand is forcing you to look at certain things and not others.
Re: Keep doing that and you'll go blind
#8I have Amblyopia -- an eye condition where the image from one eye is partially suppressed by the brain. I'd been wondering what a 3D movie would do to me for a while since parallax doesn't work when you brain is processing the images from each eye as separate. It turns out that the answer is not much of anything, but I still have to wear the glasses to filter out the second image.
Although I'm sure it will be nice for some people, I'm personally hoping that this doesn't catch on. It's pretty annoying to pay extra and have to wear special glasses (on top of my real glasses) when I'm physically incapable of benefiting from them.
Re: Keep doing that and you'll go blind
#9From the article: The Wikipedia entry on depth perception (an excellent read) lists ten different cues that your brain uses to figure out exactly how far away something is. Parallax is just one of them. Since the various movie and television display technologies only offer parallax-based depth cues, your brain basically has to ignore several other cues while you're immersed in the world of Avatar. This is why the 3D…
Most of the cues listed seem like they are still used in a 3D film - aerial perspective, relative size, occlusion, etc can be stimulated and peripheral vision is irrelevant.
Re: Keep doing that and you'll go blind
#10From the article: The Wikipedia entry on depth perception (an excellent read) lists ten different cues that your brain uses to figure out exactly how far away something is. Parallax is just one of them. Since the various movie and television display technologies only offer parallax-based depth cues, your brain basically has to ignore several other cues while you're immersed in the world of Avatar. This is why the 3D…
From the Wikipedia article, of the 13 depth cues, only 2 aren't properly present in 3D films - accommodation (having to focus the eyes) and peripheral vision - and the peripheral vision cue is also missing from regular cinema, TV etc.
So are there more things going on here? It seems unlikely to me that the focus of the eye lens is having a big impact.