>It seems to me that most LEDs dim gradually over time. Of course, esp. the warm white ones (they got more phosphor). For 50k hours, the LEDs are likely to dro

>It seems to me that most LEDs dim gradually over time. Of course, esp. the warm white ones (they got more phosphor). For 50k hours, the LEDs are likely to drop to 70ish% of their original brightness, provided they stay below 50C[0] - lumen maintenance. That would depend on the spec. of the LEDs but it should be a ballpark number. [0]: https://datasheetspdf.com/pdf-file/1404455/BIVAR/SM5730UWDW05/1 https://datasheetspdf.com/pdf-file/1404455/BIVAR/SM5730UWDW0...