RyanWell this is interesting...
A meter of red LEDs and a meter of yellow LEDs, identical specs, on identical batteries.
The red LEDs went out after 10 hours, the yellow LEDs are still going after 15 hours.
Wat.
Cassidy Curtis@yantor3d Ooh ooh, I think I know why! Apparently, in order to make an LED that looks really red to the human eye, the frequency needs to be on the very edge of the visible spectrum, so it won’t activate your “green” cones (whose region of sensitivity overlaps with the “red” ones.) But your sensitivity to light at that frequency is much lower than in the center— so the LED needs to emit much more light to seem equally bright to the human eye.
@yantor3d This is one of many amazing tidbits I picked up from Paul Debevec's talk for the San Francisco #SIGGRAPH chapter on "The Full Spectrum of Virtual Production": https://www.youtube.com/watch?v=tMpg29Vc0bU
