Hardware vs. Software Controls



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  • @fluxy I have a Ben Q Eye Care, Low blue light, No PWM monitor, and I purchased it for those reasons. From what I can see, the low blue light is just a software / RGB filter, the same / similar to f.lux. No PWM (there should NEVER be PWM, it should all be No PWM!!!).



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  • There are only two people behind f.lux: Lorna and Mike (herf). They are a husband and wife team. That's it. There is no development team or anything else.



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  • f.lux team

    I have not measured a Ben Q monitor. Do you have any spectral charts for it? I can tell you that most interventions I've seen don't remove nearly enough blue to be effective at reducing circadian alertingness. You can play with f.luxometer at https://fluxometer.com/rainbow/ and see what we have measured. Ben Q would be a nice addition.



  • @lorna The best I could do is say TFTcentral has a few color level charts (not the rainbow style, but like RGBCMYK bars.)


  • f.lux team

    Most displays use White LED backlights, so any adjustments they make are quite similar to the ones f.lux does (just less flexible). For the most part, we have seen minor adjustments (typically >5000K).

    There are some good reasons to do this for eyestrain, but for circadian effects we don't think it helps that much.

    In terms of priorities, we spend 2/3 of our time thinking about TIMING (when to make changes, and how fast) and 1/3 of our time thinking about how effective we are at making lighting adjustments.

    Still that 1/3 is a lot of work -- see https://fluxometer.com/rainbow/



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  • f.lux team

    That's what I expect they do. Other than a few laptops there are no RGBLED backlights or OLED at that size either.



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  • f.lux team

    Actually OLED is higher "melanopic lux per lux" than WLED, about 20% more at the same brightness, so I would call them "slightly more" stimulating than WLED.

    But no there is no magic (aside from a programmable backlight like some RGBLED panels) that f.lux doesn't do identically to these screens. They may give you a different choice of color tones, and you might like them better, but that's about it.

    Apparently some OLEDs do use PWM though - you can find videos on Youtube about Galaxy S4 using PWM at low dimming settings.



  • @herf Every OLED device uses PWM currently. Windows phone, samsung, motorolla all the rest. It's terrible.


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