CBE, ASC, BSC
Easiest would probably be LED, set warmer than what your cameras set at.
For that strong contrast, a 4×4 flag would help, to bring in more shadow and control spill that could show up from the book light (negative fill). Set it on the shadow side of the subject.
I remembered something else I should of said. Using some sort of negative fill would help with the shadows, like a 4×4 flag, or any black fabric I think.
Something that could be done is doing a book light, meaning your source goes into a bounce, and then goes through silk or cloth, so your source is in the middle of these. I’ve used a 6×6 for this on a subject and it has worked nicely. Remember that what determines a lights softness is its size relative to the subject.
