How to Use a Light Meter - an Excellent Cinematography Tutorial from Ryan E. Walters
This site has covered light meters in the past (here and here), but this video by Ryan E. Walters is too good not to share. In the video, Ryan elucidates very well how and why to use a light meter (his pick: the Sekonic L-758C). People pay good money for tutorials of this caliber, so thanks to Ryan for sharing this video for free. Very helpful stuff for DPs:
More info on Ryan's site below. But first, a bonus! Here's his tutorial for lighting a scene at ISO 800 (which is the native ISO of RED cameras, the ARRI ALEXA, and the Sony F3 if I'm not mistaken):
Ryan's stock footage is available here.