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KM the Opple measures only 24ms and makes these two images. This is my benq ew3270u at 20% brightness for example. It is better than nothing but you are right to say real time is better.
Bought a sony A9s oled tv wish me luck 😜
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Since a couple of days i had a small high soft buzz in my head. Searched the web and youtube and i can say with certain that i got some sort of tinnitus. This started on the 3th or 4th day of watching TV with this OLED. I searched the web for oled tv tinnitus and i got severall hits including on this forum. So the TV must GO 
There are people that got this buzz with their oled tvs and i am convinced that this is another manifestation of flicker.
My eyes are great no eye strain, but continued to have small low level migraines that evolved to this tinnitus thing. Since i have the return max date at end of jannuary will try to test more but for sure i am to return this TV.
Also i found that the TV APP on android is better to watch tv (got me more relaxed with viewing less migraines) however when i connect hdmi sources such nvidia shield or even in the internal you tube app things become a bit more syntomatic. ( not sure why this happens all image presets are the same)
I am also having ideas of buying the 48A90K to see if i get the same result …however this is a pricier tv around 1400-1500 euros :S
Another hope is a new QD oled Tv that "could" appear in 2023 for 50" fingers crossed!
What gives me hope regarding oled its that my eyes are fine! So another oled tv model… maybe…. can work for me….
raven83 I searched the web for oled tv tinnitus and i got severall hits including on this forum. So the TV must GO
There are people that got this buzz with their oled tvs and i am convinced that this is another manifestation of flicker.
Not sure whether tinnitus results from flicker (I won't rule it out though, since flicker messes with your iris muscles), but I do know that one thing that can cause tinnitus are tight muscles around your head, neck, and shoulder area, which might also be the cause for being sensitive to flicker. I got tinnitus roughly two years ago, almost a year after my flicker sensitivity issues came back after being somewhat dormant before that.
My tinnitus is still there, but I could improve it quite a bit by doing several things, for instance, by wearing prescribed night braces to keep me from grinding my teeth, which eventually can cause you to have tight neck muscles. Also particular sleeping positions can result in tinnitus getting worse (in my case it's laying on the back).
seeker_of_no_light you think this is not from the tv? Last week i got a cold，fever and gut issues something i eat or seasonal winter viruses according with a medic…but i am recovered. Coincidence or not this started the third tv day and continues…
raven83 It was not my intention to imply that. Just wanted to propose a theory that tinnitus might be tangently related to issues resulting from flicker, since the eye muscle strain and tightness resulting from flicker may spread to nearby muscles close to the ear and the tightness of these muscles could cause tinnitus.
Tons of nerves come out of your neck and travel to innervate parts of your face including your ears. The muscles around your neck can entrap these nerves causing all kinds of problems. Forward head posture causes lots of issues. I've had issues that will go away literally as i release a muscle that is all knotted up in my neck. It's pretty crazy. Can get intense tinnitus, tingling, pain, etc
13 days later
Update - returned the sony 48A9 master series oled - reason : headaches + migraines
Visited a diferent shop and saw a samsung 50QN90B …. Got my attention… have the possibility to get an open box for 900 euros.
Crazy feeling of trying this beast lol however has pwm from 120hz to 960hz according to the image mode chosen. It is a miniled backlight tv…. About 1500 nits max. Lol so its a light cannon ….. At the shop i stared a couple of minutes and was confortable but…. I dont know i got a crazy good feeling about this tv….the motion is absolutely top notch….got me thinking of plasma motion…
What do you think? Lol
raven83 my father has an older lg qled tv and i dont get nausea from it. Also thought about testing a light canon and using it only on SDR.
5 months later
Regarding my tinitus symptons on the Sony A9s i concluded this were not from the tv but some esomeprazol med i started to take on that time. That was a coincidence and it is not related!
10 months later
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Oled tv is mot for me! My conclusion
fyi, same PWM TV models can be eye-strain or not. On my xg9505 setting BFI cause eye-strain, also reducing backlight to lowest values results in more intense and not sine-wave PWM and eye-strain also. The problem is you need devices to measure screens and state logic of comfortable ones
raven83 Also what is sine-wave?
here is lg qned80 series TV. Look at PWM, very square-view-form, when I measure TVs in shop on the 3 january '24, I found only varyaties of this form. If you compare it to sony ( which is no-eye-strain for me ) you will find they use different types of PWM waveform. Some users reported, they can use samsung s10 (which have sine-wave PWM) and cannot use samsung s20 (or higher, dont remember) - the PWM form is changed to square-view.
I measured different monitors and TVs, and can say the PWM form is key. All "old and safe" PWM screens I measured, have sine ( smooth, curved ) view
11 days later
My opple lightmaster iv arrived…
Started test… sony A95K
I put it about 5 cm 10 cm of the tv. With the vertical box below. Testing on white background.
The worst result was later when the abl of the tv started….so abl adds flicker….
When we test with normal.content moving we get high risk and low risk…..cycling….
Am i testing this right?
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raven83 Started test… sony A95K
- On my xg9505, few things have influence on PWM ( increase modulation depth in %)
- Light sensor = OFF
- Sharpness -> Clearness ( BlackFrameInsertion ) = Min
- Local screen dimming = OFF
- X-Tended Dynamic Range = OFF
- To get proper results, place Opple4 very close ( to reduce reflections etc ) in dark room ( no more clocks shining, no more lights in room ), then I often start video in YT called "A Screen Of Pure White For 10 Hours" and start to measure
- idk what for A95K, but sony's TV should gave safe PWM at ~730hz, try to find settings
My safe settings is I wrote above + light sensor ON + 25 brightness level in dark room.
I can post modulation % and avg brightness level which is good for eyes of all viewers
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Here is my safe option
