Quite possibly. I found one study on ipd & it did show variance to the norm by region but world average. But regional averages maybe higher or lower than 64.
Facial profiles also vary a great deal. As some find the headset due to nose shape & size either slides down (small) while others find it weighs heavy on the nose (big).
One of the issues on the p4k was it was more designed for normal to a certain level of myopia which of course causes issues for preopia(sp?) Which suggests by region that chiness are often myopic vs farsighted.
He said there not allowed. Only way to test if it might work if your having issues is to try. Just save a *.bak file to have original unmodified version.
That user is suggesting editing your IPD value to be over 1 meter wide. Either that setting isn’t actually used by anything or this user is a very unique individual.
Perhaps Pimax should rush the eye tracking module out, so that they can utilize it for distortion correction. This may fix the issue, at least partially.
I initially didn’t feel any eye strain, but after a mammoth 6 hour session racing in parallel projection I have determined that I can live with the discomfort, but we are running into a design flaw which is a result of the optics + canted lenses.
The threads from Risa basically sum it up. When we are focusing and our eyes are converging, our eyes face towards the middle/each other slightly, meanwhile the canted lenses diverge by about 10 degrees, so this means that because our eyes aren’t facing 10 deg in different directions naturally, they are not naturally aligned towards the sweet spot axis.
I have found that trying to ‘get both eyes sharp’ actually increases my discomfort and increases the distortions at either side. If I set it close to my natural IPD there is a sort of bluriness and things ‘don’t feel quite right’ but the discomfort decreases and the warping is much more minimal. So the issue is really coming about when you are trying to focus on something. My right eye is dominant so I think that if you have a slightly lazy eye you probably also don’t notice the weird divergence as badly.
I initially wrote off the things the 6 testers were saying but I think the wider truth of what is happening here is that we are actually dealing with a major design tradeoff. I actually think that you can move the lenses closer but it wont solve the problem for lower IPDs as the actual issue and the source of the discomfort is the canted display / optical design being too far out of whack with real life and people are accommodating to that in varying degrees.
I do wonder if there is a way to mitigate the eyestrain in software, as it is I can personally live with the tradeoff, but people buying this headset retail will be raising hell if there is not a design revision…
That looks ridiculous, is it too front heavy with that many face cushions and does it move around too much?
Interesting observations.
The poll now has over 30 votes with still more in favour of having experienced eye strain or unclear image in one eye than those who haven’t, at 64mm IPD or less.
It’s not a neccessary tradeoff to have eyestrain on a Ultrawide fov headset because of the angled/cantered displays, have a look at StarVRone and XTAL, people haven’t reported getting eye strain with those headsets.
@anon74848233@PimaxUSA What about different lens design with less cantered displays to remove eyestrain problems? Instead of 10 degrees angled try 5 degrees?
I think it is a tradeoff at their price point, remember the StarVR and XTAL were very different price points, likely due to the lens designs. I think to get it down to this price point is possible but much harder…
Mate I feel for you with world scale. Did you own a different hmd before? I’m starting to think it maybe previous install of software. It’s definitely software related as mine is now fixed.
Also on the blur in one eye. Try shifting the hmd to one side. I find it’s always my right eye that gets blurry. But after I either lift or drop the right side or I move the hmd to the left. I also have the hmd about 1cm extra padding at the bottom.
The problem is not with the poll data, but how you try to interpret them. My real IPD is 72 mm (measured many times by an optician), I have my Pimax 5k+ set to 70 mm.
Now if you ask me if I can see the same spot razor sharp by both eyes, I would say no.
When looking dead ahead the best focus I can get in the left eye is 10° to the left. Looking ahead is slightly blurry. If I want to get the sharp spot in front of me, I have to turn my head 10° to the right. Then my left eye align with the optical axes of the lens, and gets the most favorable viewing spot. But then, my right eye is completely blurred, because now it is looking through the right lens peripheral ring at 20° angle to the optical axes.
So with my 72 mm IPD (70 mm dialed in) I cannot take a look at the same spot and have the razor sharp focus exactly the same way as you cannot (or anyone else, regardless his IPD). It is because the way the lenses, the panels, and the whole view geometry is defined (and designed).
You may point out that with my large enough IPD I could easily bring the lenses closer enough to get the “clean pass through”. Well, I could, just for the sake of the exercise, but when doing it, I get very strong geometry distortion, which causes far bigger discomfort for me than the slightly blurred image in the first configuration. So I opted for the lesser evil and stay with one (or the other) eye blurred rather than suffer the screwed up geometry.
The problem is not that you prefer the geometry distortion over the blurred image, the problem is that you imply that this should be the general panacea for the crowd. It is not as I can confirm by my experience. On top of that it leaves you using the headset in the configuration for which it was not designed and which suffers from strong geometry distortion - where, basically, nothing really works anymore (from geometry/distortion point of view).
I also experienced this 10 degree angle difference while trying to get the most sharp focus as possible. If I look straight if it is slighly blurry, than around 10 degree change in the direction where I look with one eye makes the focus perfect but than other gets slighly blurry. May be this factor also affects the eye strain. Obviously this is not a manufacturing issue with a couple of Pimax. So far not everyone noticed this due to excitement for large FOV but I believe with time they would find out it.
I just wished Pimax had handled all those issues before shipping hmd.
I think it’s more of the case that this hmd is just not easy to get right. Unlike the 110 fov headset that you can just put the them on and find the sweet spot . Pimax you have to tilt rotate shift move away move closer and then the ipd on top of that. I think with all these adjustments a few people struggle to get it right. I’m not talking about the people with ipd 55m but 60mm ipd I think it’s more common
If you get a chance can you get an image on the HMD, lets say a black background with some white text, anything that makes the fresnel lens ring show up and tell me if the center ring is in front of your eyes or are they slightly out side of your eyes.
