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timppu: If your question is "Doesn't practically all light, including sunlight, have at least some amount of HEV light?", then the answer is yes.
That's not my question at all. My question is: given a picture with well defined HEV content, does the technology used affect the amount of HEV radiated? I mean, given well calibrated OLED, LED, CRT displays which show the same image, will any of them have different HEV characteristics?

(It's obvious that an incandescent lamp will have less HEV than a white LED, because they're radiating different parts of the spectrum, but there's no particular definition of what they need to show.)

As for light close to the eyes, I imagine it's as with sound and headphones: it doesn't matter in theory, but it does give an opportunity for excess. With headphones, people often tend to set the volume too high. The same may be possible with a VR display. But I think that if people follow normal calibration procedures, this shouldn't be a big issue. That said, I'm sure some games will be set too bright, with people needing "virtual shades" and turn down brightness. That said, most games, certainly AAA games, support changing brightness, and IIRC that's also something that's possible through drivers.

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phaolo: I'm more worried abot myopia.
We already focus at 50cm for hours with monitors, but with visors at.. 5?
A good VR headset will let your eyes focus normally. You certainly don't focus on the lenses any more than you focus on your glasses when you wear them.
Post edited July 03, 2016 by ET3D
When your stare at a static monitor 30 inches from your face, your eyes are locked at the same angle the entire time. With VR, you are actively using your depth perception, which is the whole reason we have two eyes instead of one. Also, you can turn your head to look around.

Sure, VR might be unhealthy for the eyes, but it could just as well be that VR give the users a health boost, since VR are build around the way our sight functions used in real life.
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ET3D: HEV light is simply blue and violet light. Won't any well calibrated display have the same amount of HEV for the same image, regardless of the display technology?
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timppu: If your question is "Doesn't practically all light, including sunlight, have at least some amount of HEV light?", then the answer is yes.

If your question is "Don't they all have the same amount of HEV light?", then the answer is no. Consider e.g. that you aren't exposed to HEV only when you see blue or violet light on the screen. The blue is one component which makes white light really white. Without it they'd be closer to pink instead of snow white. Here's some discussion about the different (artificial) light sources:

http://lowvision.preventblindness.org/daily-living-2/artificial-lighting-and-the-blue-light-hazard/#types

Regardless of the type of display technology used with the VR glasses, I was more concerned that:

A) They are kept very close to your eyes.

B) They are used for prolonged times (as in e.g. gaming).

The distance matters too, as well as brightness etc.
I am concerned about that as well. I always wondered if intereacting with something that close to your eyes would alter your vision over time.
I'm definitely in the wait and see boat. While I think the whole idea of VR is "Cool", to me at least, it's more of a oddity or curiosity, not a way in which *I* wish to experience gaming....at least not at this time in my life. Along with price, and other concerns people raised above, I also feel about VR in gaming much the way I regard 3D movies. While I know it's not the same thing, I go out of my way to avoid 3D movies at the theater, I can't stand them. Initially, upon seeing my first 3D movie many years ago, I thought it was kinda cool....sort of, but I really didn't care for the glasses, and to be honest, after watching a couple more when all the studios started jumping on the band wagon, I really disliked them...a LOT. I basically won't go out to see a movie in a theater anymore, unless it's showing in the old non-3D format, and apparently, I am not alone, because almost all movies (that are also 3 D) are now shown in both formats when released (at least in my area). Perhaps years down the road, I might feel differently regard VR gaming, but for now, it doesn't really interest me very much
Post edited July 03, 2016 by Zoltan999
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Zoltan999: I go out of my way to avoid 3D movies at the theater
I recently went to a 4DX movie with my wife, who hates 3D movies. The glasses were surprisingly light compared to previous experiences, and she didn't suffer. Well, she did suffer from the 4DX effects... There was also nothing 'in your face' about the 3D experience, unlike some other movies. It just added depth, which did show, but no gimmicks, things flying at your face, like in early 3D movies. The movie was Alice Through the Looking Glass.
I'm really not interested in VR. The last thing I want is to go further down the rabbit hole. I'm surprised VR is taking off like it is, to be honest with you.

People have already outlined the cons of VR in this thread. It's a pretty good argument to at least wait a few years, if nothing else.
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Zoltan999: I go out of my way to avoid 3D movies at the theater
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ET3D: I recently went to a 4DX movie with my wife, who hates 3D movies. The glasses were surprisingly light compared to previous experiences, and she didn't suffer. Well, she did suffer from the 4DX effects... There was also nothing 'in your face' about the 3D experience, unlike some other movies. It just added depth, which did show, but no gimmicks, things flying at your face, like in early 3D movies. The movie was Alice Through the Looking Glass.
That's interesting...didn't realize there even was 4DX in theaters now. Don't know if I would try it or not...maybe. What symptoms did she suffer? (For the record, my gal hates 3D too, lol)
Post edited July 03, 2016 by Zoltan999
Besides all the concerns already expressed here, I'm more worried about VR outside of gaming. If social and commercial interactions get somewhere close to what this Wired article outlines, I bet many of you guys won't want to touch a VR headset or MR glasses even with a ten foot pole.

Technologically I can't help but wonder at what lies ahead, but socially...
As what other says, I prefer to wait 5 years to see what health problems comes out with VR first before deciding.
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nepundo: Besides all the concerns already expressed here, I'm more worried about VR outside of gaming. If social and commercial interactions get somewhere close to what this Wired article outlines, I bet many of you guys won't want to touch a VR headset or MR glasses even with a ten foot pole.

Technologically I can't help but wonder at what lies ahead, but socially...
That's a long article, anything specific they mention that you are worried about?
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nepundo: Besides all the concerns already expressed here, I'm more worried about VR outside of gaming. If social and commercial interactions get somewhere close to what this Wired article outlines, I bet many of you guys won't want to touch a VR headset or MR glasses even with a ten foot pole.

Technologically I can't help but wonder at what lies ahead, but socially...
Social interaction and the way we think has already been shifted radically by the internet. I think the reason you worry about VR is that it is a new medium, and it thus feel alien, as opposite to the internet, which feel safe and comfy.
I only want to get a Google Cardboard only to just 'test' this VR fad. Otherwise, no, no, and no.

Price is way up high for what is essentially a monitor on your eyes. Since it is on your eyes, it must also tire you faster than a regular monitor would. And then there's the talked about content-locking. The Vive either needs Steam to work, or the Oculus can be disabled entirely and remotely if the makers so wish to be it.
Smartphones have loads of input options - touch-sensible screen, microphone, tilt-sensibility, camera, GPS ... But still, lots of smartphone games used an on-screen joystick, because that's the input the game developers are used to work with.

I fear VR will suffer from the same problem: The games will be based on traditional screen-based gameplay, instead of embracing the new medium.

Also, I really hate the way the VR hardware is playing console war.

But other than that, I'm WAY excited about VR! Can't way to try this stuff!
Not interested. Gaming without keyboard+mouse is stupid :-P
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KasperHviid: Social interaction and the way we think has already been shifted radically by the internet. I think the reason you worry about VR is that it is a new medium, and it thus feel alien, as opposite to the internet, which feel safe and comfy.
Yes, things have already changed and are changing very rapidly. I guess the same could be said about smartphones, and computers before that, and actually about whatever new technology that came into existence during one's life. (Like whaaaat, playing online games instead of meeting to play a tabletop game?)

It could be also that, like most people around here (even the older guys), I consider myself nearly a digital native when it comes to current technology, but VR-wise we'll all be digital immigrants. That makes a big difference in the way you embrace a certain technology.

However, the degree of control that VR/MR can have over everything you do in your life is a line I'm not sure I want to cross. For others that line maybe was always connected smartphones. Or credit cards before. Some people will not worry until chips start getting implanted under our skin or in our brains, and I guess most people will never worry about anything at all and just swallow everything that gets thrown at them.

Anyway, I just wanted to point out that besides cost and health (very valid concerns), there are other factors to consider before jumping in the VR wagon. Specially with the amount of people around here who are worried about privacy.