Comments by "Chrysippus" (@4.0.4) on "LED bulbs that flicker, and CFLs that almost never did" video.

  1. I also hate the "cold white" LEDs! These are usually 6500K, but there exist 4000K ones (warm is 3000K) which I use when I want "white" light. 6500K is depressing. By the way some smartphones (like mine) have a filter that removes the 60Hz/50Hz flicker (selectable). Dunno how it works, it can't be doing FFT filtering to the whole image in real-time at 4K, can it? Maybe it scans the sensor at just the right rate and adjusts brightness with a gradient overlay?
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  2. Paul Gascoigne that sounds gorgeous, never thought of looking for 2000K ones!
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  3. I have to mention some LEDs say the same temperature but they look different. In fact, the number is no science - if you look at them with a spectrum analyzer it's not one frequency but many. I say this because some 3000K LEDs are glorious but you can't know from a fact sheet. Easy way to see this is to go to a physical shop.
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