There's a plethora of resources on how to light interviews (and I've shot plenty of those), but I'm helping cover an event for a documentary, an on-stage male presenter interviewing a female guest talent.
The room itself is a pretty ugly white rectangle with overhead fluorescents, I hope to kill most of them or leave just enough for ambient light. This is a documentary and at the "two DSLRs and a few bucks for G&E" level, so I'm not trying to reinvent or design the space, just mostly interested in making the subjects appealing. I looked at some TED talks for visual reference.
There's no truss or budget for one. Ceiling is high and I expect to have to rely on stands. Hope I'll get 70-200mm zooms for the cameras.
Quick sketch with some options:
1. When doing interviews, I'm used to rely on large (=soft) sources: bounce cards, softboxes etc., but unless you see otherwise, my keys/fills will have to be 20-25 feet away. What's the best approach in such a case?
2. My plan is very simple, (A+ as either 36º Lekos or 1K fresnels, high enough to get out of the talent's eyeline and land the shadows on the smile line. They'd cross-key and also serve as an (intentionally) frontal fill.
For backlight (D), I first thought about a 650 Tweenie, but is there a away to effectively backlight both talent with 1 point source? How about a 1x4ft (or 2x4ft) Kino?
[C] Was just an optional idea, if you see any merit to it. I mostly think it would just annoy the talent.
3. Diffusion: 215/250/half grid? Same on both sides, or different strengths for the female talent? Leko+Heavier diffusion, or 1K + lighter diff?
4. My hunch told me I'd need way more light than that, but I ran the Arri photometrics calculator and a single 1K fresnel at medium spot from 25ft away should cover 13ft at 55fc, enough for f5.6 at 800ISO. Does it sound right?
Your thoughts and opinions are appreciated. Thanks!
Edited by Drew Lahat, 12 March 2016 - 10:46 PM.