Photographing a spotlight effect
I am wondering if someone could point me in the right direction with a photo I am working on. I am building a little set in which I want to shine a "spotlight" down on, as in a classic theater scene where the presenter stands in front of the curtain. I am thinking I could use a strong flashlight for this, but am wondering how I might capture the beam. I have a fog machine, but even if that scattered the light, I fear that it would just make the whole scene hazy.
I am shooting black and white film. Can anyone give me any tips or ideas?