photon78s Yes, I think you are right. I'm also wondering if we are missing detecting high frequency temporal dithering in our testing approaches.
We’d likely need a camera like this one: https://www.flir.com/products/x6980hs-insb/ capable of 1kHz slow motion. There’s not even a price listed, but comparable scientific cameras are tens of thousands of dollars.
We have been trying to get Top G to join the forum because of his wealth of technical knowledge.
photon78s https://www.reddit.com/r/PWM_Sensitive/comments/1lmv0bs/comment/n0cs7ek/?context=3
Without excessive Delta u'v' changes, TD will never be a concern for eyestrain and it will never be. Ever.
In simpler terms, Delta u'v' is the combination of (Hue angle + chroma)
Just as PWM — without amplitude flickers, PWM will never be a concern. Be it PWM with duty cycle of 80:20%, 50:50% or even 10:90%.
This is deeply rooted in fundamental mathematics. Take any digit and * 0 your finally result will always end up with 0. IMO this concept shouldn't really be something worth debating over.
Tagging @JTL in this thread. This is the next step we should be taking as a community. PWM and dither are easier for us to identify using consumer tools, but as that post indicates, we are merely scratching the surface of the complexities involved.
My hunch is this is why some people seemingly are finding very specific Samsung screens on the iPhone 17 Air and iPhone 17 Pro usable despite trying several other phones of the same model and configuration and being unable to use them. This has happened across laptops and desktops as well, specifically with Apple devices.
I think we have to acknowledge that we are likely reaching the limit of what we can identify with consumer tools. Brute force methods like Stillcolor, HDMI vs display port, Ditherig, etc. work in some circumstances. But like with certain pharmaceutical treatments, it is probably like taking a firing hose to a candle.