I disabled dithering on Apple silicon + Introducing Stillcolor macOS M1/M2/M3

deepflame The main problem of modern iPhones is low frequency PWM. More likely, modern iPhones don't use temporal dithering at all.

NewDwarf I mean if dithering can be turned off on LCD iPhones that would be huge. They also do make LCDs for OLED iPhones which I've seen some have super high PWM which is good. How do you know modern ones don't dither ? I'm sure they do. Dark mode, reduce whitepoint,and night shift all seem to trigger dithering which was noted on flickersense.org

I'm sure they are using the same pixel color flicker technique on modern iPhones too.

jordan I mean if dithering can be turned off on LCD iPhones that would be huge.

LCD iPhones, like iPhone 11, iPhone SE 2020/2022 are PWM and dithering free! This means is nothing to disable there. iPhone 12 and newer are all OLED.

jordan They also do make LCDs for OLED iPhones which I've seen some have super high PWM which is good.

That is not true. In the best case, PWM does not exceed 1 kHz. This frequency is too low for the PWM sensitive persons.

jordan I'm sure they are using the same pixel color flicker technique on modern iPhones too.

…I am not sure

Just checked youtube videos. They confirm that the temporal dithering is not present on the OLED iPhones.

https://www.youtube.com/watch?v=ieCT17IZp2E // iPhone 14 Pro

NewDwarf LCD iPhones definitely do dither. You can see how the admin of flicker sense did testing on it.

She has the iPhone test data here:
https://www.flickersense.org/testing-leds-and-screens

asus389

I tried as listed as "10 bit" Eizo ColorEdge CS2740 with some PCs. Don't have the display anymore. Hope someone with a similar or better panel can test again with Stillcolor. Is this "true 10 bit" (it costs more than some cars): https://www.eizoglobal.com/products/coloredge/cg3146/index.html#tab02

NewDwarf They do I can clearly see and feel moving static patterns / dithering on my iPhone SE 2 (LCD) screen (it has iOS 17.2.1) and gradients also look more smooth than they "should" on my 14 Pro with iOS 16 too.

Not sure about the OLED iPhones (since it has backlight precision per pixel, it might be using that instead to achieve greater color depth i.e. different PWM frequency per pixel), but for the LCD, it's so obviously using temporal dithering to my eyes. I have an iPhone 6 and iPhone 7 with the same resolution and size screen that feel so much more comfortable than the SE does.

However I have some older devices that don't dither or dither less, like an iPad 6 with an earlier version of iOS 15 that shows way more banding on gradients, shadows, and transparency effects.

jordan

One last thing worth noting is what that "flagship" Eizo's marketing says:
"stable display using industry-first ai" and "the color and brightness of an LCD monitor can shift due to changes in ambient temperature and the temperature of the monitor itself" and using that temperature data, the monitor "adjust in real-time so gradations, color, brightness and other characteristics continue to be displayed accurately." Wow and what "other characteristics". Lastly for laughs or feelings of anger they say "a small number of people perceive flicker on their screen which causes eye fatigue". I heard they cheat by using high frequency PWM at low brightness levels on other models.

deepflame I'd recommend the M2 Air or M3 Air instead. The M3 Pros and other Pros with XDR displays have a lot more quirks with their screen (for example, they have 10,000 individually controlled backlights behind the screen that all basically use different PWM frequencies per zone to dim at independent amounts) that we don't know everything about or how to solve yet.

I've already discovered two additional properties unique to the Pros that are needed in addition to disabling dithering to further improve the screen output, there are a lot of extra things the Pro displays do that are currently unknown.

Meanwhile, M2 Airs have a simple, traditional edge-lit LCD for the most part with a PWM-free backlight, and Stillcolor can resolve a very significant amount of issues with their display output.

photon78s yikessss lol. All that color changing stuff sounds like a mess. Can we just get basic displays without all this wacky tech! haha. Wow even if we don't perceive flicker it still affects us, definitely angering when I see people post stuff like that. Most people who "aren't affected" just haven't connected it to their screens I'm sure

jordan No idea, the old Plus phones use scaling FYI so they're not pixel accurate, it's taking a 2K image but then downscaling it down to a 1080p panel like how Macs do when they're not on @2x resolution. If you're sensitive to that I'd recommend a regular 7 instead.

All I know is that my regular 7 with an earlier version of iOS 15 is very comfortable compared to my SE 2. It does have a P3 color display, but it doesn't seem to affect me — even though it still does display brighter reds than sRGB, it doesn't have the extremely oversaturated reds that my SE 2 has.

The only reason I don't use my 7 really is due to 60% battery health and a broken "loose" charging port, meaning I can't use it while it's charging and mine only lasts for 1 hour. But you can definitely find a 7 in way better condition than mine is, lol.

I've heard some people here talk about iPhone 7 suddenly becoming unusable with iOS 15.7 or 15.8, so look for one on an earlier version.

IIRC I remember iPhone screens starting to feel "weird" (way before I learned what temporal dithering was) when the iPhone 8 launched, I knew a friend with an iPhone 8 and even on its original version I thought the screen looked "weirdly smoothed out" or "overly glowing and shiny" to me. So iPhone 7 is probably the last "good" iPhone LCD, at least concerning how the software is choosing to render to it.