Text readability.



  • Hey. Just tried this nice tool. It seems that not only blue light decreases, but also brightness in general, so I had to slightly increase it manually during dark hours. Probably you can measure that and set some compensations. Brightness is related to text readability which obviously shouldn't suffer, and it's enough that modern displays have light sensors to change it automatically. Even if the total brightness doesn't change and it's just a human perception of the spectrum shift, it would be great to have an option “keep text readability”, which would save us from touching brightness controls every evening. Thank you :)



  • @ivfgs What style (model) monitor do you have, and have you considered just increasing text size? Oh and what brightness and white level do you use for room lighting?



  • @timpster I've been using Macbook Pro 15" for one year now. No, I didn't have problems with the text size during evening work hours before. So, it's the new experience with the lack of brihgtness to me.
    My room is just normally lighted, I mean I don't work in dark conditions. Am not sure which exactly type the lamps are, but they are not incandescent, so I'd say the lighting is quite white.


  • f.lux team

    @ivfgs Is there any chance you may be farsighted and undercorrected? That's one instance where someone may have some trouble focusing when the light you see is very red. (Nearsighted and overcorrected could cause this too)

    Late at night there's definitely some changes in the eye that can make things harder to read, but I don't think that should happen to the extent you're describing.

    You can see some of our measurements of brightness and color at https://fluxometer.com/rainbow/



  • @lorna I had a LASIK operation about 5 years ago to correct -3 myopia, it's OK now.
    The lihgt is not very red, I set it to be 5000k:Sunlight.
    Oh, cool, at https://fluxometer.com/rainbow/ it says that 6500K is 61% as brihgt as daylight, while 5000K is 50%. May that's what I am talking about. The light sensor automatically decreses brightness of my laptop in the evening time, but apart from that the software decreases it by 11%, too.


  • f.lux team

    Kind of - that % as bright as daylight is not exactly the same thing as brightness, rather it tries to calculate how the color of the light your seeing might affect your circadian timing. 5000K should not affect your visible brightness very much at all (nor should it be causing chromatic aberration in your lens). Maybe the combination of autobrightness from your laptop and f.lux is too dim for you.What's your computer?



  • @lorna

    @ivfgs said:

    @timpster I've been using Macbook Pro 15" for one year now.


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