While that's true, f.lux handles edge cases in important ways -- letting you disable it for certain apps or time periods, as well as "movie mode." As much as I'

While that's true, f.lux handles edge cases in important ways -- letting you disable it for certain apps or time periods, as well as "movie mode." As much as I'd like to see this feature be built into the OS, Apple tends to simplify away a lot of fiddly preferences by choosing what they hope are sensible defaults, and as much as I appreciate that in theory, in practice this might be one of those areas where fiddly preferences are superior.