I agree, it is an avoid. This guy reviewed the oled model in-depth with both the opple and the radex at this link below that I shared awhile ago, check it out if you haven't seen it. I have an LCD one myself and it does not flicker like the oled one does.
https://www.reddit.com/r/SteamDeck/comments/1882kys/analysis_of_the_pwmflickervisual_fatigue_of_the/
If your OPPLE v4 can read up to 9846Hz. then you shoud return it for a refund. The engineer answered that question on the https://budgetlightforum.com/t/opple-light-master-4-discussion-thread-new-2023-model/217940/874
"the minimum sampling time span for flicker is 11µs, according to Nyquist sampling theory, the maximal frequency is around 1000000 / 22, about 45K Hz."
So the output should be 45K Hz , not 9846Hz.
Besides OPPLE V4 is not sold anywhere except china, it's too much unstable to be sold in Europe. Don't know about US.
The answer from programmer / engineer Steve is not promising on the future of opple v4.
"idea from one of the employee of the Japanese’s firm verified, seems does not work.
I don’t know why those coefficients are constants, is it applicable to a wide range of CCTs? I doubt it."
"I think it is not we don’t care about other lights, it’s just we prioritize our lights first. we encountered problem as I said before, there is no smooth transition when one of the LM3 team member left us, and then I was not involved in LM development at all, so I have no knowledge of the transition process.
then the magic number listed in below graph emerged when I started to proceed to this development stage, those magic numbers are for LM3 which used as7262, but for LM4 we use as7341 for those magic numbers need to be recalculated, and I have no idea of how those numbers are generated. How can I do, please tell me."
Calling color constant "magic numbers", not knowing how colors are calculated.
Old team no longer is working on v3 and not on v4.
Upper management not understanding what product they are making for what market, they want to make it read their own light sources only. WFT? read about that in thread link i posted.
The LCD steam deck bothered me. I think it dithers ?
Not all OLED screens are bad (as on SteamDeck). The eyes do not get tired of good OLED screens. Let's take the Lenovo Tab P11 Pro 2 Gen (OLED) as an example. Set the brightness to 10%
For the 120Hz screen from PWM 55% of my eyes do not get tired. Most likely "eye safe" (as on the Poco F5). The frequency of DC Dimming / FullPWM is twice as high (than on Deck OLED). On Modulation depth 93% ignore, the frequency is too high for the Light Master. For those who do not like Mediatek, there is a model on SnapDragon 870 (they have the same screens).Helped RomanV82 with the review, thank you.
Please pardon my ignorance. In this topic, it seems to be suggested that higher refresh rates on these phone displays cause more rapid flickering and therefore more strain. I had the impression that (at least with PWM) higher frequencies are less perceptible to the eyes and therefore less likely to cause strain. I have never heard of reducing framerate for better comfort, but indeed the opposite.
Am I mixing up factors which are separate things?
macsforme I had the impression that (at least with PWM) higher frequencies are less perceptible to the eyes and therefore less likely to cause strain.
Generally speaking, I believe your statement is correct. Faster is generally better. For most people, most of the time.
Ninkear N15 Pro laptop on FullHD IPS-like panel CSOT SNF601BS1-1 (6bit+FRC)
The Chinese have not heard of the Flicker Free certificate. The screen flickers even at 100% brightness. On the Poco GT X4 phone the screen flickers at a frequency of 50000Hz (painful to watch). On Ninkear N15 Pro the flickering is “normal”. You can ignore the Modulation depth value. Light Master counts incorrectly at frequencies above 10000Hz. Just look at the curve graph.
Even if your eyes do not see flicker, this does not mean that there is no flicker. High frequency flickering is a common cause of migraines. At 50% brightness I don’t feel any problems with my eyes. This is understandable, because there is no flickering. Pulsations for IPS panels are also normal. At low brightness, the screen begins to flicker again.
And flickering again. The truth does not 200Hz, as it was a couple of years ago on all AMD Ryzen laptops. Uncle Liao learns to make laptops good. The flicker for Light Master is too high (out of range). Modulation depth does not display correctly.
what is the maximum flickering frequency that this device can detect? and according to your experience with this device: do you advice to use it?
thank you
Let's look at the lamps. The first will be Xiaomi Mijia Charging Table Lamp 5W (MJTD03YL).
That's right, the lamp flickers with a frequency of 14000Hz. When the brightness decreases (in read mode), the pulsations increase.
The second will be Xiaomi Yeelight LED Screen Light Bar Pro 10W (YLTD003).
At low brightness, the lamp flickers at 1000Hz frequency.
At high brightness, it is safe for the eyes.
Here's the Redmi Note 13 Pro Plus 5G with AMOLED 1920Hz screen. Set to 120Hz mode (forced).
Uncle Liao didn't cheat, it's a very good screen! Honest 1920Hz at low brightness.
Modern laptops/monitors flicker even with a Flicker Free certificate. Why does TÜV Rheinland think flickering is more 20000Hz safe for the eyes? Take two laptops for example: Maibenben M545 for $500 and Maibenben X639 for $2000. And both flicker! Even at 100% brightness.
My friend bought a drawing tablet. Blackview MEGA 1 (IPS / 120Hz). At 100% brightness, the tablet owner does not see flickering. The new AMOLED screens also flicker at 120Hz (screen refresh rate). This is a new "eye protection" technology.
When the brightness decreases to 50%, the eyes do not hurt. I watched a couple of YouTube videos.
Below 50%, the brightness of the PWM may be too high, especially for sensitive eyes.
A friend has a Poco X4 GT phone flickering at 50000Hz. He also does not see flicker.
I just ordered one of these. Canyou write up a little guide on what the graphs and numbers mean?
Office laptop Tecno Megabook T15AA for $600. The screen is high quality, 120% sRGB coverage. Panel N156HCE-EN1 (8bit). Great laptop, except the screen flickers! No need to panic. Only at 10% brightness. The flicker frequency of 25000Hz is also high. There are no problems at brightness above 10%.
