degarb
Flashlight Enthusiast
http://www.carbonlighthouse.com/2014/02/13/683-lumens-per-watt/
Interesting article. Suggested to me, by my creepy, snooping phone. The article explains why there was so many conflicting posts as to the max lpw. It used to be 270. But Cree broke 300. Maybe 270 is for high cri?
Interesting article. Suggested to me, by my creepy, snooping phone. The article explains why there was so many conflicting posts as to the max lpw. It used to be 270. But Cree broke 300. Maybe 270 is for high cri?