Beginning Cinematographers

What are three key suggestions that this video made that you find useful that you didn't know before?  Why are these so interesting?

    Three key suggestions that this video made are (1) defining your subject, (2) exposure, and (3) the "spotlight." The video advises that, upon figuring out who/what you are shooting, ask yourself how much of them you should show for the given shot. This is interesting as it is something that seems minor but actually can drastically affect the kind of shot which you shoot and the impact it has on the audience. The next interesting piece of advice was regarding exposure and what tools you can use to have good exposure. The video gave some basic tips, but elaborated more on how to expose different skin tones. Using the spot meter tool, caucasion and pale skin tones should be +1, brown and mid skin tone should be at 0, and darker skin tones should be -1. This is interesting because it's a tool which I haven't considered previously and a helpful frame of reference. This goes into the last piece of advice, which is to create a "spotlight" on your subject by having a contrasting background, i.e., a light background for a dark subject or a dark background for a light subject. It's an idea which I haven't considered much, but is still incredibly important, tying back to the defining of the subject.