Okay, this is a very broad question, using lighting modifiers such as flags and scrims is really the heart of all cinematography, since it gives shape and emotion to the images. I should use this scene from No Country For Old Men as an example. Let's say Roger shot this scene with 500T at approximately T/3.4
There's a PAR 16 practical in the back at WF, maybe a 60W globe next to Javier Bardem, and I believe there's another practical next to the Woody Harrelson...So, when Javier is away from the lamp next to him, which is the key light, he should be just about 1 1/2 stop under the key?
Anyhow, the real question is, when lighting a scene, such as this one, does the light require to be moved with each different set up? I know Roger is a master cinematographer, so I doubt he has to move the lights around, he places them in strategic areas, which would require very little modification, from set up to set up. I remember in the commentary on Fargo, he merely put a few lights up on the lamp post to augment the intensity when Buscemi kills the old guy in the parking lot, and that was all he did. I like the style of using minimal lighting equipment to help motivated lighting, but I suppose the real trick lies in the technique of using lighting modifiers and finding THE right place to put the lights, which would require very little time to tweak as the camera changes set-ups.
There are literally no books on lighting technique, which I guess is kept secret, or else everyone would be doing it, I mean everyone can turn on a lamp, but giving shape to the light with modifiers is something else, I don't have the tools to learn much about this, but I guess I could experiment with a maglite or something. Could anyone give their two cents as to how this scene was lit? Normally, when you turn on as many lights, the whole room is enveloped with light. But the way there's shadow in the far right side in the background, and the separation of light and shadow is quite remarkable!
Is there a very simple technique for a beginner like me? If I were to light a scene like this, what fixtures would you use and how many flags, and what sizes would you get? -- This post is not so much about how Roger did it, but how you would have done it, just to see the varying possibilities of lighting a scene. Depending on the wattage of the fixture, the beam angle, should that give you an idea as to what sized flags you will need to control spill, and highlight important parts of the scene?
i know it's a broad question, but I need examples as to how flags and scrims are applied to lighting.