Comment by xeonmc
4 hours ago
> Roughly equivalent resolution to Quest 3 and less than Vision Pro. This won't be suitable as a monitor replacement for general desktop use. But the price is hopefully low.
Question, what is the criteria for deciding this to be the case? Could you not just move your face closer to the virtual screen to see finer details?
There's no precise criteria but the usual measure is ppd (pixels per degree) and it needs to be high enough such that detailed content (such as text) displayed at a reasonable size is clearly legible without eye strain.
> "Could you not just move your face closer to the virtual screen to see finer details?"
Sure, but then you have the problem of, say, using an IMAX screen as your computer monitor. The level of head motion required to consume screen content (i.e., a ton of large head movements) would make the device very uncomfortable quite quickly.
The Vision Pro has about ~35ppd and generally people seems to think it hits the bar for monitor replacement. Meta Quest 3 has ~25ppd and generally people seem to think it does not. The Steam Frame is specs-wise much closer to Quest 3 than Vision Pro.
There are some software things you can do to increase legibility of details like text, but ultimately you do need physical pixels.
Even the vision pro at 35ppd simply isn't close to the PPD you can get from a good desktop monitor (we can calculate PPD for desktop monitors too, using size and viewing distance).
Apple's "retina" HiDPI monitors typically have PPD well beyond 35 at ordinary viewing distances, even a 1080p 24 inch monitor on your desk can exceed this.
For me personally, 35ppd feels about the minimum I would accept for emulating a monitor for text work in a VR headset, but it's still not good enough for me to even begin thinking about using it to replace any of my monitors.
> https://phrogz.net/tmp/ScreenDensityCalculator.html
Oh yeah for sure. Most people seem to accept that 35ppd is "good enough" but not actually at-par with a high quality high-dpi monitor.
I agree with you - I would personally consider 35ppd to be the floor for usability for this purpose. It's good in a pinch (need a nice workstation setup in a hotel room?) but I would not currently consider any extant hardware as full-time replacements for a good monitor.
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We get by with lower resolution monitors with lower pixel density all the time.
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Not only would it be a chore to constantly lean in closer to different parts of your monitor to see full detail, but looking at close-up objects in VR exacerbates the vergence-accommodation mismatch issue, which causes eye strain. You would need varifocal lenses to fix this, which have only been demonstrated in prototypes so far.
This all sounds a bit like the “better horse” framing. Maybe richer content shouldn’t be consumed as primarily a virtualized page. Maybe mixing font sizes and over sized text can be a standard in itself.
Couldn't you get around that by having a "zoom" feature on a very large but distant monitor?
Yes but that can create major motion sickness issues - motion that does not correspond top the user's actual physical movements create a dissonance that is expressed as motion sickness for a large portion of the population.
This is the main reason many VR games don't let you just walk around and opt for teleportation-based movement systems - your avatar moving while your body doesn't can be quite physically uncomfortable.
There are ways of minimizing this - for example some VR games give you "tunnel vision" by blacking out peripheral vision while the movement is happening. But overall there's a lot of ergo considerations here and no perfect solution. The equivalent for a virtual desktop might be to limit the size of the window while the user is zooming/panning.
Yes. You can make a low-resolution monitor (like 800x600px, once upon a time a usable resolution) and/or provide zoom and panning controls
I've tried that combination in an earlier iteration of Lenovo's smart glasses, and it technically works. But the experience you get is not fun or productive. If you need to do it (say to work on confidential documents in public) you can do it, but it's not something you'd do in a normal setup
For a small taste of what using that might be like turn on screen magnification on your existing computers. It's technically usable but not particularly productive or pleasant to use if you don't /have/ to use it.
It's just about what pixel per degree will get you close to the modern irl setup. Obviously it's enough for 80 char consoles but you'd need to dip into large fonts for a desktop.
I did the math on this site and I'd have to hunch less than a foot from the screen to hit 35 PPD on my work provided Thinkpad X1 Carbon with a 14" 1920x1200 screen. My usual distance is nearly double that so my ppd normally is more like 70 ppd, roughly.
https://phrogz.net/tmp/ScreenDensityCalculator.html#find:dis...