Explanation of Lee Filter

As they say in the Article,  Lee filters are pretty universal, & there are lots of them , so It's nice to see someone try and explain what they all do.

As a bonus there's a roscoe to lee equivalency video & spread sheet

Here's the link

P.S. I noticed they are using a light cube just like the one I have, and they used a colour chart, which I should get for studio/controlled work. I I did more of that type of work. 

Basically that's just me being a noob and liking when the big kids use the same gear I do.