In my opinion that was really exaggerated by Vive, minor differences don’t cause significant results in my experience with modding. I highly doubt this is the problem here.
In fact, I modded my Pimax 4k myself by removing the lenses and putting them further apart, to accomodate for my IPD. This didn’t change the distortion at all.
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Is it possible that there are different lens in some headsets?
Maybe pimax had stock of a previous lens & thought they could use them up without us noticing.
Maybe costs are trying to be cut on lens production.
Maybe the supplier has sent a batch of different lens to pimax to get rid of them, without pimax being aware.
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It does though, because adjusting ipd pushes the weird spots to different areas around your eyes.
The geometry doesn’t change when you change your IPD, at least I don’t think I’ve noticed that
The type of distortion I see on my 5k plus was not like the early described running water on a diving mask or blurred edges etc…
I see like a circular wave all around my vision where when you move your head, the whole world distorts through this wave & beyond to the outer edges of the screens.
Buildings & trees etc lean from side to side. Get thinner/wider at the top/bottom etc… all when I look around.
I still havent found the time to play more with my headset yet so I want to experiment more with fov, settings, games & generally put more time in to see if I acclimatise & it goes away almost entirely.
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Exactly! That is what distortion is.
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I just want an app where I can adjust this myself with a mouse and my hmd on.
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When I heard people describe it before, it never sounded like this though which is why I was a little surprised.
I always thought it would be a sort of uniformed stretching on the very outer edges
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Prior vive users: trained to turn their heads looking mostly straight forward. Used to staring at grains of pixels.
Use to vive/rift very low sweetspot. Used to only reading text the size of street signs.
Hates low fov.
Newish to vr: looks all over the place, expects screen to look like their 120hz 4k monitor. Used to staring at high res graphics, just barely understands concepts like low persistence, sde etc
Used to reading size 6 fonts.
Watches Netflix on their 2nd monitor.
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Could it be due to millimeter changes in the manufacture of the lenses? I also think that a slightly different angulation of the screens can cause big problems.
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Well, if it were that sensitive even on the same lens, just imagine what would happen if you actually swapped the lenses with a pair, which was never desigend specifically for that headset type. Oh wait, that’s exactly what hordes of people have done to the Vive - and are still enjoying their modded Vive giving them a much better & clearer picture without weird distortions.
So no, I do not think that it is a generally tricky & super-sensitive issue. But of course we do not know how this transition area from the yolk to the eggwhite part of the Pimax lenses works, and how carefully that area needs to be matched in the profile.
Has any of those who notice the distortions been able to relate their location to the transition area between the yolk & egg white aprt of the lenses ? From what I saw in Gouda I thought I noticed that the egg white part would be just very slightly blurry compared to the crystal clear picture in the yolk part.
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Me too, then sjefdeklerk explained the meaning of distortion, although I don’t agree with the definition, I guess it’s better to go with that to avoid misunderstanding.
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If the differences are accidental, some people who have both headsets should notice that (and Sebastian could be one of them)
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The thing is the word distortion in itself is pretty broad. We could have anything from stretch, twist, curve, warp, deform & any of those could be minor to severe
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But if you google it: vr distortion - Google Search
Then you’ll quickly see that in VR distortion refers to the incorrect geometry, the ‘bending’ effect caused by the lens.
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@anon74848233 do you do quality checks of the lenses? Could it be that there are failed lenses on sent units?
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This would be good, to do a consistency check between few headsets and see if differences are subjective.
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Eye distance to lens would make a difference, so wondering if they have changed thickness of the face foam.
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@Sjef That effect is called “Polynomial_Barrel_Distortion”, in some injectors you can play it around with config parameters, maybe we can ask to Pimax add this feature in Piplay… some example below
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Well distortion happens in VR all the time. If you look through a lens at a paper, you’ll see very very heavy distortion, that’s what lenses do. So to solve that problem, VR headsets pre distort the image, so that if you’d look at it through the lens, you’d see the original image again. However obviously that doesn’t work very well in the pimax hmd’s.
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