I’ve made a chart that simply horizontal resolution of HMD divide with its horizontal FOV.
I know I know, Every HMD has different technology and method for making image. Also Every HMD has different percentage usage of panel.
However.
Every HMD that i have tried it’s really match well with the numbers of qualities.
Funny thing is that the number of result is very well match with the percentage of real eye resolution.
That’s why i gave the human eye value 100
Yes. That’s mean, HTC Vive is pretty much making image like 10- 13 % of real life for me.
And New Pimax HMD is very much like about 15% .
You can image roughly how much clear the HMD would be. I assume Reverb must be amazing depend of the result of calculation even though I’ve never tried it before.
IMO the review is very much match with the number.
Now I’m very excite to have 8KX to my my hand.
I hope it would be help you to understand HMDs image quality before you buy.
== Update===
7/2/2019
Panel usage slot had added, in order to match with many VR enthusiast reviews.
0.8 = single screen normal FOV HMD
0.9 =Large FOV HMD
1 = rift or Vive type normal dual screen FOV HMD
1.1= Valve index that match with other similar quality of HMD,
1.2 = Special increase PPI technology applied HMD
7/3/2019
-Vive Cosmos and Pimax 5k XR had been added.
-HP Reverb and Pimax 4k’s Panel usage is decreased by fixed IPD unit.
-Matrix and Screen door chart slot had been added.
You should add an estimated panel usage column and reduce in proportion P/D, valve index is way to low in your classification most review class it just after the 5K+ in term of resolution. Every headset without mechanical IPD adjustment has a lower screen utilization ( special case for the pimax headsets). I you want to keep simple use 100% for all fully mechanically adjustable IPD headset and 85-90% the others…
Shouldn’t it be H. FOV H. resolution instead of V.?
Also you’re human eyes resolution is blow out of proportion here. super eyes can distinguish 85 lines pair/degree let say it’s 4 pixels per line pair has a pattern like white-black-white-black this give
about 170x4x85=57800 H pixels for a full reality 5K+ or 74800 H pixels for 220 degree
I you want to keep things simple use 100% for all fully mechanically adjustable IPD headset and 85-90% the others… Except for Pimax that has fixed panels so 85% or mono panels headset like the 4K that must keep border for software IPD adjustment
This would replace for example the Xtal higher than the Pimax 4K in your chart 19*0.85=16 (round down)
And don’t the lenses on the 5K+ magnify the images on the panels, reducing the apparent result because the perceived pixel density is less?
78% being the visible part of the panels through the lenses on the 5K+ according to @Sjef, so 21(entire panel ppd)/100(entire panel) x 78(visible panel) gives a result of 16.38, possibly as much as 17 for the 8KX,
And 14/100 x 78 is 11 for the 5k+.
Then again the above calculations are before magnification, but I think the 5K+ has greater magnification than other headsets, which technically reduces PPD since unrendered pixels are not seen and the lenses magnify what is rendered to the entire fov of the lenses which reduces perceived pixel density.
The 8KX supposedly has greater panel utilization, but nothing has been said about less lens magnification or updated lenses. So the IPD mod was probably added to the 8KXs design.
I’m pretty sure that I could make the 5K+ look better than that with the colour/contrast tools , Vive pro looks better though , I thought the reverb was getting near to vive pro contrast/colour so looking forwards to 8KX reveiw
I don’t understand - how can panel usage be more than 1? I thought 1 means full panel is used.
Human eye is tricky because that resolution you get only on tiny area. And it is only for black/white 100% contrast so not real scenario (full colour lower contrast gets you much lower resolution).
I don’t understand this comment, from those 2 pictures I like Pimax more. On index picture there are some strange line artefacts on teeth and colors are oversaturated. But then I think we concluded long ago that comparing pictures does not make much sense and what you actually see is often different.
if you want to have a real headache ask Jojon or Risa2000. wouldn’t have reacted if valve index was not so low