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I have played many fps games, and noticed that the camera perspective is similar to the 'one eyed view' of the surroundings. It does not feel like bilinear. :/ Is it because of the single flat view of the screen? Or is it the problem that can be fixed by some research? PS: If you want, try to roam around with only one eye open. |
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I'll state the obvious - FPS games are doing the best they can within the limitations of a single 2D display device. The interesting part - this might change soon thanks to the Oculus Rift project - a VR headset for games. I've seen info that DOOM 3 is fully supported (due to Carmack's involvement) and that Hawken has promised support. There is also work on external engine integration (Unity and Unreal were mentioned here). Note the games on Oculus must support full stereoscopic 3D, since the headset has a separate display for each eye. |
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It's hard to tell exactly what's being asked here but I'll try to give the best answer I can. There are a few misconceptions going around in comments and answers so I'll try to clarify all this, to the best of my knowledge.
Indeed, the default (horizontal) field of view of first-person shooters (e.g. 75° in HL2) is notably smaller than the 'natural' FOV (around 95°). It might be close to a single eye FOV, but to me this is more or less a coincidence.
Not really. This is simply a side effect of the display size. The FOV is reduced to compensate the fact that a regular screen doesn't cover your entire vision (you can see your environment around the screen, unless you stick your nose on the flat panel). Note than some gamers like to change this default FOV to something bigger for a better view of their virtual surroundings. So there is no single magic value used in FPS games: this is a matter of preferences and habits. Stereoscopic 3D displays are quite common nowadays, and plenty of games support them, thus offering a proper 'two eyed view'. The default FOV is not changed in those cases: the fact that both of your eyes receive a different image doesn't change the relative size of the display compared to your vision.
I wouldn't call this a problem. The 'fix' already exists, lots of game allow you to change the FOV on-the-fly, for instance try typing this in HL2's console: This will seem to distort the perspective on a regular screen. To keep a natural-looking perspective with a high FOV, you simply have to use a display that covers your entire vision (stereoscopic or not). There are plenty of solutions:
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IMO the main reason for the usually limited field of view is preventing things like motion sickness and keeping aspect ratios sane (i.e. not looking awkward). Most players will most likely sit around 30-50 cm in front of their screen, probably a bit more for console games. If you consider the screen to be a "window" you're looking through and its size, you'd be able to have a field of view of around 60-90 °, which is the usual setting used in these games as well. Due to this you get a "realistic" view even while moving. If this doesn't really fit, the player might encounter things like motion sickness, or he'd just see the scene as through a fisheye (which usually isn't desired either). |
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Most games allow you to adjust the field of view to your liking within reason, and many seems to set it rather narrow as default - likely because it will perform better and I'd guess cause less issues with nausea that way? It's not like you can actually recreate the feeling of roaming around with two eyes on a flat display without additional tools like shutter glasses and wider, closer placed displays or HMDs. |
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As Liosan said, only in the future we will change that (Oculus Rift is also coming to the steam box). But i think is a even more distant future. Oculos Rift just puts your head as the control of the camera (i think), so it will still be a flat image. |
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