seeker_of_no_light you think this is not from the tv? Last week i got a coldļ¼fever and gut issues something i eat or seasonal winter viruses according with a medicā¦but i am recovered. Coincidence or not this started the third tv day and continuesā¦
Bought a sony A9s oled tv wish me luck š
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 ā¦. Got my attentionā¦ 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 tvā¦. About 1500 nits max. Lol so its a light cannon ā¦.. At the shop i stared a couple of minutes and was confortable butā¦. I dont know i got a crazy good feeling about this tvā¦.the motion is absolutely top notchā¦.got me thinking of plasma motionā¦
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 arrivedā¦
Started testā¦ 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 startedā¦.so abl adds flickerā¦.
When we test with normal.content moving we get high risk and low riskā¦..cyclingā¦.
Am i testing this right?
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raven83 Started testā¦ 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
Ok but if you test with normal tv content playing you get high risk for sureā¦.i got thatā¦.
So i dont think opple is giving any help because in normal content the choices we made with white background does not applyā¦
I taugh we calibrate on white but then we got the same values in normal contentā¦.each time a color changes we have a diferent value lol