Agreed which is why i posted the article detailing brightness in lux. I think the article said
Oculus was 130lux
Vive 390lux
I would imagine even between 260+ shld be plenty.
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But I wonder how that works for a low persistence screen thatsā off 50% of the time. Does the lux then indicate the brightness during the āon timeā ?
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Iām not sure. I think it just measures light output. So if the backlight is modulated on/off that its probably peak high or average light output.
Oled/Amoled are low persistance as well in the same idea so a lux meter as shown should give at least a baseline for a compare.
Edit: Now pulsing thr backlight on/off will have a less effect on dimming the display compared to shudder glass. This is due to shudder glass is not as they say crystal clear still a tad tinted; they mention that screen protectors on phones also dulls the screen somewhat.
Can you confirm the final kickstarter model will have improved displays? better than the prototype?Thanks
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I just found this old post:
http://community.openmr.ai/t/motion-blurring-pimax-vs-sde-oculus-vive-gearvr/150/3
that seems quite some exaggeration of how well the pimax 4k performs. I wonder if theyāre exaggerating again. We really need more professional reviews.
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The brightness of 8k is almost the same as the Oculus CV1. The brightness spec will be provided later
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@Matthew.Xu but will the kickstarter model displays be better than the prototype shown to tested ?
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Yes, thatās for sure.
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So then as the Oculus cv1 is reported as having a brightness of 130lux then for those who need the high brightness that the Vive has reported as 390lux are better off waiting to see if your team can boost the brightness to somewhere between 260lux & say 300lux.
For those who require higher brightness due to vision issues.
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I do not understand you guys.
I already spent 4 hours playing directly on the Pimax 4K and I never felt discomfort.
I use the basic āmore brightnessā configuration and I think itās bright enough.
I imagine I would have to reduce the brightness to play in HTC VIVE for an hour, my eyes would dry, hurt and bleed.
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I play without the filters (lowering brightness of course) for hours and still seeing!!! LOL 
I do agree that to me; i havenāt had issues with brightness. However some do have vision issuee related to brightness & require a higher brightness level then the so to speak average person.
There is alot of talk about the vive being too bright to the point Steamvr added options to reduce brightness. But the need to have a wide range. For example it is likely some would be light sensitive & require to reduce brightness even in the 4k model.
So on either fronts it is a needed required spec to give min brightness & max.
Being a straight forward question; should be able to get simple response.
We are not sure on exact brightness in lux but in our experience around the same or better as Rift cv1. Will talk with the engineers & see if we can get a mpre detailed answer. Keep in mind this will only relate to current model.
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As a CV1 owner I think a lot of the brightness problem is also due to the low resolution. The combination of SDE + Low resolution + low pixel density and brightness makes a really dull image. Pimax are improving most of those things. They have also confirmed the final production screens will be improvement over the prototype displays. Hopefully kickstarter will help them buy higher quality components
Thanks alot for your information , yes i noticed the same thing , but this Filter thing that is in pimax 8K , i am not sure if it is Removable? and by removing it what does it affect only brightness?
if that is the case , that is actually something neat , so anyone can basically customize the brightness for his personal preference , i just want a confirmation on this
and please let me know how does it compare to the Oculus 
I donāt beleave the pimax 8k uses a filter only the 4K did. Can someone confirm.
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I Did read that , and i totally happy to hear that , but i am a person who cant try the Pimax 8K Myself which could save me alot of questions that i asked like this brightness thing i opened this topic about , i live in jordan, which basically doesnt have any booths for the Pimax VR so all news or ideas that can help me basically comes from reviewers and people who tried it , so if i can get some numbers to compare with current headsets in Luminance, that would be great so i can tell what is the difference at least in numbers , i know it may not be really accurate like trying it , but its my best way to tell
Regards
Ali
Thank you, now it seems to be clear what kind of brightness i should be expecting , because i am an Oculus and Vive owner as i mentioned, so i would for sure wait for more bright Screen from the Pimax, that is the only drawback for me now , other than that this headset is great in so many ways, i just cant wait to have it
Thanks again Helio!
Your welcome. The 5k/8k models donāt use the shudder glass the 4k used (the shudder glass is the same idea that is used in active shudder 3d glasses)
Now as @Matthew.Xu mentioned though the vurrent brightness is comparable to Oculus CV1 with the current model that Tested tried out. So in the next week we will hopefully have some reviews on the improved model.
Tested if you watched their video & post in tge comments could likely give you their impression of brightness from the Kickstarter launch date.
Now something you could try on your Oculus & Vive is a set of Gamers glasses that help improve brightness. If you canāt find a set even night driving glasses may improve contrast/brightness.
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Oh my god noā¦I have low light vision issues, but I already kickstarted this. Iām number 86.
Iām not going to be able to see this ;( ?
If we could get clarification on the contrast ratio of the displays and the LUX of the 5K/8K kickstarter and production models you could alleviate much of the consumer concerns voiced here.