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    Hardware vs. Software Controls

    Sleep and Light
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    • ?
      A Former User last edited by

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      • Tungsten_smooth
        Tungsten_smooth @Guest last edited by

        @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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        • ?
          A Former User last edited by A Former User

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          • TwoCables
            TwoCables last edited by

            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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            • ?
              A Former User last edited by A Former User

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              • lorna
                lorna last edited by

                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

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                • Tungsten_smooth
                  Tungsten_smooth @lorna last edited by

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

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                  • herf
                    herf last edited by

                    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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                    • ?
                      A Former User last edited by

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                      • herf
                        herf last edited by

                        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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                        • ?
                          A Former User last edited by

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                          • herf
                            herf last edited by

                            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.

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                            • Tungsten_smooth
                              Tungsten_smooth @herf last edited by

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

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