Yeah they keep saying that “it looks better in reality” but somehow nobody is able to capture that reality on a photo, like I did with the Pimax 4k.
You didn’t either. You just think you have.
Does the Pimax 4K use the same upscaler algorithm / Bridge Chip as the 8K? It seems Pimax are reluctant to talk about it due to confidentiality.
Same Fresnel lens style?
Default Super Sampling setting on it? Or pumped right up? If you really want to test better then do a grid pattern or a red box or something so SS on a bitmap is not a distracting factor.
Maybe the 4K was ahead of its time (visually) like the Kuro TV’s that were incredible but non-sustainable.
And not sure that the 8K is meant to be on a par with the 4K where SDE is concerned, the 8K HMD has super wide FOV, new lenses, lens profiles and all sorts of things to make it work at that FOV, It takes a hit there for sure. FOV seemed more of a goal than better SDE than the 4K, yes?
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It seems they’re different types. This topic was merely meant for those people claiming that upscaling always is a bad thing. Obviously that’s not true at all. The pimax 4k is a great example of very succesful upscaling with results much better than panels running at native 1440p.
Sure, but it should at least perform on par. A step back from previous gen wouldn’t be a good thing in my opinion.
Doesn’t use fresnel lenses, uses aspheric lenses.
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It is not a step back on the HMD as a whole though is it?. Maybe one aspect, the SDE compared to the 4K.
But that’s it.
The 4K doesn’t have Steam tracking, Native Oculus support, only 60Hz, no modules like the 8K etc etc. It’s more special TV than a VR HMD of today 
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Of course the HMD as a whole is better, that’s not even a contest. The Pimax 4k might be really THE worst HMD out there, apart from the res/SDE. The ghosting alone makes it pretty much unusable for gaming (fun fact: Sony disabled VR on their phone with the exact same panel because they felt it was unsuitable for VR). And who cares about gaming without 3d controllers anyway. Maybe some flight sims are playable and that’s it.
What the Pimax 4k was though, was a peak into the future of SDE free VR. So that’s why I think the Pimax 8k will be a disappointment for 4k owners.
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I feel sorry for those 10 people too but this is not an upgrade to the 4K. This is an entirely new product range for Pimax. I think if you see it as that that then the disappointment will be lessened. Maybe they can create a Pimax Zero (no SDE) which is an upgrade to it hmmmm
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Actually, using some logic I think what is true - generally 8K is two 4K in terms of screens/sde/etc. The only differences are that Pimax 8K is using Analogix chip that is newer than 4K and 4K is 60Hz. I hope Analogix made their newer chip scaler better (or at lease there is no reason for it to be not so good as in 4K).
There are people on this forum who knows much more about Analogix chips than me 
4K - renders at 1440p, upscale to 4K on the headset, 60Hz, 110 diag FOV, old displays; some part of the 4K screen is lost due to the distortions, central area
8K - let’s say - renders at 2 x 1440p, so no loss due to the compression, and upscales to 2 x4K on the headset, 80Hz, 200 diag FOV, new displays,
both headsets should have roughly same SDE/clarity. 8K should have better visuals in some aspects overall due to the new iteration of screens, and 8K should require roughly 2 x (80/60) = 2.6 more GPU power to run the games in the same settings as 4K.
The only reason for 8K to be not so good comparing to 4K IMHO is that 8K upscaler is not able to invoke same high quality upscale algorithm as in 4K due to the high volume of data to be processed. BTW this can be the issue with 80Hz.
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Well that’s become clear indeed. Too bad, we’ll have to wait another generation for SDE free gaming. Then again, interesting high res panel tech is coming up within 6 months so the future does look good.
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Is this with 0 supersampling ?
They need to put a Sony X1 processor from the 2018 OLED in a HMD. That thing can upscale SD to HD or HD to near 4K.
Maybe Lumagen could get involved as a go-between somehow too.
Also Pixel Shift tech may work too.
Shouldn’t be too long now I hope
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I had SS at 140 both instances.
how does it look with no supersampling…because that seems to be the current comparitive state of comparison with the 5k+ and 8k due to gpu performance restrictions
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Not sure if that would be feasible. There are a lot of factors that you have to take into account when making an HMD that you don’t have to focus on when making a TV.
For example, you could run multiple/more complicated upscaling filters on a TV but the latency would be unacceptable on an HMD. Power consumption is also a huge issue with HMDs, which was one of the issues the 8K was having.
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Indeed the 8k Overall needs more juice & has less time to have imagery genersted. I need more power Scotty.
4K user allergic to SDE here. I’m having trouble following logic concerning SDE on 8K/5K+ displays.
Let’s say Pimax 4K has significantly less SDE than Vive Pro.
Pimax 5K+ has slightly less SDE than Vive Pro.
Pimax 8K has slightly less SDE than 5K+.
This brings me to conclusion that Pimax 4K has quite a bit less SDE than Pimax 8K even though it uses similarly sized panels with same resolution and PPI. Also only minor reported difference in SDE between 1440p and 2160p is confusing, it should be similar to 4K vs Vive Pro.
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tl;dr, 8K should have less SDE than 4K, 5K should have more SDE than 4K. But I doubt it’ll matter outside of very static scenes with bright backgrounds (e.g. Virtual Desktop).
Pimax 5K/8K:
Pimax 4K:
Pixels / degree (should be indicative of SDE, since all are RGB layouts):
But, even with the Rift I stopped noticing SDE in games with locomotion. It wasn’t until I tried to read text (Big Screen, Virtual Desktop) that it was a bad experience.
Edit: Note, this doesn’t account for screen utilization. 5K+ probably a little better. Maybe matches 4K, maybe not. (9% more PPD would have the 5K+ at 23.25 instead of 21.33)
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It comes down to RGB vs Pentile. Rgb panels have less sde vs pentile.
Example if we have 2 oled (to keep other visual compares at bay)
4k oled Pentile will have more sde over 4k oled rgb.
The 4k & 8k sde will be similar as the ppi should be similar if same sized panels.
Now if you had 4k*4k per eye in a 100° FoV headset then yes you’d have better sde over the 4k.
The 5k has better sde over the vive due to rgb vs pentile. The 100FoV of the 5k would be more like a 1440p headset. But the Rgb factor looks better than a pentile screen.
The last Berlin review in the Berlin Backers impression talks about ppd. But a user pointed out before in VR we should br looking at SPPD (subPixel Per Degree)
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