The NEC 2490 is okay as far as eye strain goes, at least to me. Sales and Grumble grumble. I am also extremely sensitive to PWM and have had quite a lot of struggle recently with PWM, so this pain is very familiar. IIRC for such displays color depth checks are done to see if temporal dithering is needed to create the illusion of 8-bit colors. By the way, I also get eyestrain with modern GPUs. 3.Forget to disable dithering -> shut down -> turn on PC -> dithering success is depend on luck. I believe the fact that low quality dithering methods can cause problems, but on recent Macbook's such as mine I don't think I have had any problems. I'll try fishing my post and of my email sent box later. 4/28/2021, 3:20 PM Temporal dithering is an intentionally applied blurring method used by some graphics cards to increase the amount of color and shading that can be done on a system. Is anyone else suffering from the same experience and knows of a way to fully prevent this dithering? No, there is an actual deep underlying technical malfeasance that most people don't understand, and the problem is for people with sensitive eyes, another thing most people won't understand. It's main benefit is in regard to angles and lack of IPS glow, due to the A-TW polarizer (in 1st gen models). Also, please share with us: 1- your experience and symptoms. Temporal Dithering is when a graphics card has more colors than a display panel can support (eg. FastLED v2.1now includes automatic "temporal dithering" which helps preserve color and light when the brightness is turned down. To start the conversation again, simply ask a new question. This requires Windows XP or later. It could be that in the old days the drivers did the dithering and it could be disabled and enabled from the software but now drivers just send the image to the hardware and the hardware does the dithering which means it can't be turned off because it's "baked into hardware". I even spoke with a senior tech partner at Apple and he didn't even know what temporal dithering was. I am a longtime user of screens, primarily Apple products. 4) Another thing that can help relieve the eyes is Windows 10's new night light in Settings > System > Display. This way, missing colors or softer color transitions can be visualized. By 1964 dither was being used in the modern sense described in this article. ycles per degree temporal sensitivity becomes 3 lowpass. For example AUO 18 bit TFT Panels have an unpleasant "flashing" effect due to a poor dithering algorithm. Immediately I felt a really bad nausea, and this inability to focus on words on the screen. Is it possible that the FRC/temporal dithering used on 6 bit monitors to achieve an 8 bit color representation is the issue? I got terrible eye strain and headaches from using the computer for a few hours. Our key idea is to exploit this "temporal dithering" of illumination, as observed by a high-speed cam-era. u/dogelition_man I have tried the novideo_srgb and a few other apps like it. One of the major causes of eyestrain. Today we have a look at some different techniques to add depth to our materials - WPO, Displacement and POM. How does Dell disable temporal dithering? When the display panel does not have enough colors, the graphics card will emulate (fake) the missing colors by rapidly flickering between two colors (blue plus yellow equals green). For more information, see Graphics card temporal dithering impact on a PCoIP Remote Workstation card (1087) To disable temporal dithering by editing the registry in Windows based drivers. After a while of watching or looking, either at desktop range or viewing from a bed say watching a show, I get this eye strain and this blotchiness and temporary lack of focus. I did my research and a few people blamed temporal dithering of being the culprit. It could be also that since the GPU in the M-series is relatively new, the driver writers did not bother to expose the color depth option to the OS. So temporal dithering or Frame Rate Control(FRC) is a technique where pixels are flashed between 2 different colors to simulate a 3rd color correct? This is old, but looks like someone tried to disable dithering? Since the card can do 10 bits I am worried that only a true 10bit monitor might stop it. Hey, chiming in here. Or maybe it would be good to petition to have this condition officially recognized as a disability. It's a trade-off between a little distortion and much smoother looking pictures. How does Dell disable temporal dithering with the Intel Iris graphics? Ideally, I want some temporal variability as well to smooth the noise over 30 or 60 FPS (which would have the nice effect that our eyes would not perceive any noise at all). Q: Question for the Dell Support folks: It seems the folks at Dell have figured out a way to disable temporal dithering. The eye strain will reduce and also your migraine. I mean, instead of sending a 10-bit color four times like so: you can instead send two alernating colors two times like so: (disclaimer: I just made the 0 and 1s up and didn't bother to check which colors they represent but you should get the idea: save 2 bits on every transfer for increasing resolution or frame rate instead). http://androidxref.com/8.0.0_r4/search?q=dithering&defs=&refs=&path=&hist=&project=art&project=bionic&project=bootable&project=build&project=cts&project=dalvik&project=developers&project=development&project=device&project=docs&project=external&project=frameworks&project=hardware&project=kernel&project=libcore&project=libnativehelper&project=packages&project=pdk&project=platform_testing&project=prebuilts&project=sdk&project=system&project=test&project=toolchain&project=tools. Jun 20, 2022 #1 Hi all, Have been investigating some sources of eye strain and headaches with the PIxel 6, none of the PWM apps work for me, but it's been suggested that temporal dithering employed by the device might . JTL JTL Another option may appear as default setting: "auto". Astrolabium, User profile for user: Research shows that a slight rose tint reduces eye strain greatly. u/BloodyHell619 have you found a solution to this problem? First public demo of FastLED (v2.1) "Temporal Dithering". I have been reading on other forums. The caveat is that while many with the naked eye may not notice, the perceived vs. real reaction on the eyes is quite straining. Ask Apple to offer an accessibility option to disable temporal dithering. Try hard-refreshing this page to fix the error. In posts #22 and #25 he talks about dithering and says that by analyzing the frequency spectrum one could see if (monitor panel's) temporal dithering is active. Maybe for some of you this is more clear when you read it than it is to me? On the right, same animation, but rendered with FastLE. :(. It's possible this "eye strain" is something no one has been able to identity. There is definitely something going on. Would using an 8 or 10 bit monitor make any difference? From what I understand Temporal Dithering seems to be the issue. I mean the kinds used at concerts. I heard eyestrain complains from users already in 2013 but I never experienced it myself until I got Macbook Pro 16" in 2020. Is anyone else suffering from the same experience and knows of a way to prevent this dithering? Any chance you know who wrote that? My monitor is pretty old, it's an "LG FLATRON W2261VP". When I was talking to the head of displays for Apple, he mentioned the fact that laptop displays have more pins compared to let's say HDMI or VGA because they are just "dumb" panels that can't do much on their own, relies on external driver/controller board to handle brightness/PWM/connect to GPU, etc. , For example I believe many desktop TN panels implement dithering in hardware, such as my old ASUS monitor that I ran at high brightness to mitigate PWM, it gave me no other problems in the two years of using it before it's failure, although I sometimes could see a slight snow effect on certain backgrounds which doesn't seem to manifest on my Macbook (maybe because have higher resolution/better implementation on Samsung panel/different GPU setup?). We can confirm on LinkedIn if the employee is still at Google (or just email anyway and hope they are). The strain w 1118 (Flybase . The most common symptom of temporal arteritis is a throbbing, continuous headache on one or both sides of the forehead. A soft diet. The other reason could be that the more bits for color are transferred the more bandwith it requires but bandwidth has an upper limit and since the brain mixes colors together anyway if you flip them to the eye fast enough, it's more efficient to alternate between two colors than to send the additional bits. You can get eyestrain from staring at any screen or any thing for long periods. These suggestions did not solve the problem, although changing the scaling made me a bit more comfortable to use the screen - but still it is not optimal and the strain/fatigue effects are still there. No other device has ever caused me . You can definitely see them making a change when you turn the dithering off, as the test image they have changes, but when I record the screen with a screen recorder on my pc like OBS no change is happening in the recorded video. It seems this dithering thing has started to get implemented since the start of the RTX lineup. - It seems the folks at Dell have figured out how to disable dithering. In the case of Macbook Pro 16" 2019, it was literally one minute of use until I felt my eyes hurt. (Second comment precisely points out dithering as the cause. Disabling dithering enabled by default can be done to get the best quality for 8 bits or higher displays or to mitigate eye strain. It all depends on the individual TFT panels and how well they reproduce color or use dithering. Some time ago I talked to the devs in Nouveau's IRC channel. captured in an electronic forum and Apple can therefore provide no guarantee as to the efficacy of No issues with eye strain / pain. With the new screens that promise 'billions of colors' they don't actually offer a complete screen full of rich static pixels. Temporal dithering (FRC - Frame Rate Control) FRC (Frame Rate Control) or temporal dithering, . Yes, they did this when display is 6 bit (or 18 bit), that causes eyestrain. A forum where Apple customers help each other with their products. Basically all my monitors dither. Reddit and its partners use cookies and similar technologies to provide you with a better experience. You'd need to use a capture card/digital video analyzer to really know what the GPU is sending to the monitor. Upgraded about 4 months ago from my MBP 2014, which never gave any issues. Question: https://ledstrain.org/d/1797-switchresx-developer-m1-mac-does-not-allow-8-bit-color. Is anyone else suffering from the same experience and knows of a way to prevent this dithering? Can't even find any place saying what it's bit depth is. iPad Air 2, iMac 2017, Sony Xperia phoneetc) don't cause me issues. Intel should never instruct an 8 bit display to use dithering, but afaik, it does anyway. From a reliability and performance perspective I wouldn't want to but this is too much, for a daily computer for creative work. I have no idea what else could be causing the eye strain. The dithering encodes each brightness value uniquely and may be used in conjunction with virtually any active vision . They checked how it's done and said Nouveau's temporal dithering option is always disabled, except for laptop type displays. It also does nothing in reducing the pain. It could be that in the old days the drivers did the dithering and it could be disabled and enabled from the software but now drivers just send the image to the hardware and the hardware does the dithering which means it can't be turned off because it's "baked into hardware". Thanks! Temporal Dithering is when a graphics card has more colors than a display panel can support (eg. (Intel Iris Plus Graphics). I hear temporal dithering or the flashing of 2 colors can create a flicker that is bad for health. a 10 bit graphics card with an 8 bit display panel). I wonder if this still holds true today and furthermore with the fact if the dithering is done in software (by graphics drivers) or hardware. Something went wrong while trying to load the full version of this site. If I do not find a clear cut solution to end this issue, I may have to sell off this device. Massive eye strain from Temporal dithering of an RTX 3070TI . To take advantage of temporal dithering: Code your animations as if they were going to run at normal full brightness; use the full range of 0255 for RGB and HSV values as much as you wish. AFAIK, with full range RGB output, the "default" dither setting should be off, and with limited range it'll apply dither. Eye strain from temporal dithering - How does Dell disable temporal dithering? Too bright of a display and/or a flickering display can fatigue the eyes really fast. A crisper sharper screen should, in theory, be better than a lower resolution fuzzy screen because your eyes have better clues about what to focus upon. And the eye strain / pain issue went away. Here is the above mentioned email to the amd-gfx list. Here are a few of the posts about people complaining about the same issue even up to the 3090 and down to the 2000 line up. Setting to Full RGB only seems to change the dithering algorithm, and it's nowhere close to getting rid of the strain. I just found this thread about oscilloscope + photodiode measurements, in which is info about detecting temporal dithering: This seems to be the case with Apple's M-series computers because if earlier there was an option to switch from "Billions of colors" to "Millions of colors" by using Stepane Madrau's SwitchResX then now it just shows "Billions of colors" as the only option: . Apple would probably consider dithering as an Accessibility issue, but I don't know about Google. sexynerds, Aug 27, 2020 7:26 AM in response to Astrolabium, call And their support claims that there is no dithering going on. So if we find a promising git commit (some are not our issue, like ImageMagick), we can email the author, and ask what they know about temporal dithering on Android or other sources of flicker.
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