This video isn't a technical dissertation of gridded light. It’s just inspired by my recent use of the grid (a little circular metal light modifier), and it was Zack Arias who turned me on to those. With minimal gear, these little grids offer up a lot of possibilities. Also note that if you have a monobloc strobe (e.g. white lightening/alien bee), that puts out 250W of light, you can grid that and use it as a continuous light source for video. Nicole and I filmed this whole video that way.
I don’t know what i was doing shooting without grids for so long. You get some flashes, and quickly enough you want to put them in umbrellas and softboxes to get big, big, big impressive soft light. So these little, circular, cheap metal grids for your flashes get neglected in comparison. They aint big. They are small, hard light sources. They aren't much to look at.
What a mistake! They are drama in a box. The drama machines.
I got the 10, 20, 30 and 40 degree PCB set. 10 is the most narrow beam of light, 40 is the widest.
One thing that almost nobody tells you explicitly (except Zack Arias) is how much great photographic potential there is when you feather the light. That is, aim the light to shoot just past your subject, and not directly on your subject. It is completely non-intuitive. You bought these huge soft lights - and you are going to aim them away from your subject? But that’s how you get the most options out of the light.