Bulbs that take 0 to 15 seconds to reach near ... and over 63 seconds scored poor. The Sylvania Ultra-LED 100W LED20A21/DIM/0/827 is part of the Lightbulbs test program at Consumer Reports.

[Electronupdate] has a 100W LED module and penchant for Arduino Nanos — so he wondered if he could make an affordable high speed camera rig — and he did. It’s a pretty slick little setup.