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I am also wondering if simply having the filter showing in between colour and grayscale would improve battery life as well?
«Color pixels drain more energy than grayscale ones. Personally found my phone lasting twice as long as before.» Is this a joke? Is there a real physical effect at play?
I can't imagine. AFAIK no phone has "grayscale" pixels. Grey or white light is achieved by blending the other colors equally. A true monochrome screen is a thing, but they are for specialized applications and not used in phones.
Earlier quoted context omitted.
> It seems obvious that a higher perceived brightness can be achieved for any given pixel if using greyscale instead of using colors, just because less of the backlight's area is occluded. When converting to grayscale, you typically calculate the value of the pixel and then set all color components to that value. The point of this is to keep the luminance the same as it was in the original color pixel. If you’re doin…
> And just as a smell test: have you ever converted an image to grayscale and flinched away because it seemed twice as bright? Of course not; it just loses its color. Of course that is the way it is normally done. But it does not have to be done that way; does it? Guidelines and norms are meant to be bent. To demonstrate: I may be old, but I've definitely owned monochromatic "paper white" VGA displays that only respo…
Didn't work for me. App blocker from 9:30 PM - 5 PM. 30 mins Max a day of short form content apps.
I plan to put an NFC tag in my car, so that (while I’m home or working at my desk) I have to physically go outside if I really want to unlock my blocked apps before the end of the preset schedule. Meaning…. in reality…. I’m not likely to.
Earlier quoted context omitted.
I questioned the same thing over a decade ago with my then-shiny Samsung Galaxy S5: At the lowest of its low-power battery-saving modes, it drained the color from the screen and made it greyscale. Perhaps it can make sense for LCDs: After all, LCDs operate by blocking backlight. Blocking less backlight (by area ) by using greyscale might make sense: It seems obvious that a higher perceived brightness can be achieved…
> It seems obvious that a higher perceived brightness can be achieved for any given pixel if using greyscale instead of using colors, just because less of the backlight's area is occluded. When converting to grayscale, you typically calculate the value of the pixel and then set all color components to that value. The point of this is to keep the luminance the same as it was in the original color pixel. If you’re doin…
This is precisely wrong.
To maintain perceived brightness, you want to set the color channels to the original value weighted by a scale factor that accounts for the eyes’ sensitivity to each color channel.
Thanks to whoever added this
Earlier quoted context omitted.
> It seems obvious that a higher perceived brightness can be achieved for any given pixel if using greyscale instead of using colors, just because less of the backlight's area is occluded. When converting to grayscale, you typically calculate the value of the pixel and then set all color components to that value. The point of this is to keep the luminance the same as it was in the original color pixel. If you’re doin…
> When converting to grayscale, you typically calculate the value of the pixel and then set all color components to that value. The point of this is to keep the luminance the same as it was in the original color pixel. If you’re doing this correctly, the perceived brightness stays the same. This is precisely wrong. To maintain perceived brightness, you want to set the color channels to the original value weighted by…
I tried this. One week in, I got used to grayscale as well and my screen time was back to the baseline (maybe only marginally affected). After nearly a decade of trying these tricks, hacks, and gamified interventions, it’s clear to me why they rarely work: they fixate on the symptom (screen time, social media use) rather than the underlying problem. Your mind craves to feel engaged/challenged in something. So, the ac…
In my experience, I hated looking at a gray screen, so I just stop using my phone when it's in grayscale.
Earlier quoted context omitted.
> And just as a smell test: have you ever converted an image to grayscale and flinched away because it seemed twice as bright? Of course not; it just loses its color. Of course that is the way it is normally done. But it does not have to be done that way; does it? Guidelines and norms are meant to be bent. To demonstrate: I may be old, but I've definitely owned monochromatic "paper white" VGA displays that only respo…
So specifically on a backlit LCD screen with dimming zones, and in the specific case where an entire zone would have originally been blue or red (which are perceptually dimmer), you could plausibly get a small amount of energy savings. But “twice the battery life” from this is not plausible.
So in terms of practicality: It has none.
And at best, all that these hypotheticals can do is stretch out a battery a little longer by reducing the intensity of backlight that is necessary in order to succeed at using the device in a given level of ambient light.
It has never been my intent to demonstrate "twice the battery life" ["with this one simple trick!"]. That's the path of nonsense, and of chemtrails. :)
I tried this. One week in, I got used to grayscale as well and my screen time was back to the baseline (maybe only marginally affected). After nearly a decade of trying these tricks, hacks, and gamified interventions, it’s clear to me why they rarely work: they fixate on the symptom (screen time, social media use) rather than the underlying problem. Your mind craves to feel engaged/challenged in something. So, the ac…
Disagree. "Just do it" works for some people. Not everyone. In my experience, I hated looking at a gray screen, so I just stop using my phone when it's in grayscale.
They said “spend effort ensuring other meaningful time-draws are around that are more fulfilling/less damaging”.
Relevant excerpt:
> the actual problem is finding meaningful activities to replace your empty screen time, which isn't necessarily easy.