MY larger point is 1:1 replacement is pointless when I can whip out something the size of a Mars bar that puts out more light than my car's headlights. For two hours. Off a 3 hour USB charge. And LEDs are cheap. They used to not be but they're getting stupid cheap. Especially when you factor in the power savings. Grow houses became effectively invisible once LED lights became viable. Los Angeles is saving $5 a year per streetlight. The switch cost is already paid for. So yeah - LEDs aren't bulletproof and they aren't magical but they absolutely, positively kick the shit out of incandescents for almost any application. Yeah they suck ass for cinematography of any kind. The awesome part is in addition to the flicker the RGB ones have the same peaks as the CMOS most cameras use so they look all kinds of jacked. But I ain't a cinematographer so no fucks given.