Sorry that I'm slightly out of focus. I had someone else handle that today and the lens was wide, wide open. Applied a slight sharpen to it, but it's still not quite right.
At around 23:16 you can hear a loud noise. Without Automatic Gain Control disabled (as it was with Magic Lantern), that could have been a BIG problem.
Reflected Light - The light that is reflected off of a subject. Usually read with a meter at the camera's position.
Incident Light - The light that is on or illuminating the subject. Read with a meter from the location of the subject.
The light that the meter reads can be Ambient (continuous), or Flash (including strobes). For video it is always Ambient.