[Joseph Demme]

I would also like to hear an answer to this question. I have 2x HMC 150’s, and was considering the ATEM Television Studio ($1,000).

Ben, do you think the issue might be the AVCHD format? What are your camera settings like?

[Joseph Demme]

I completely forgot to write my follow-up to this; my apologies.

We ended up with this setup:
2x Panasonic HMC150s (1 center, 1 on the right)
3x 1,000 watt tungsten lights with soft boxes

Key Light: Placed in the center by camera 1, above the whiteboard
Fill Light: Placed to the right by camera 2
Back Light: Placed to the left of the whiteboard

It works really well. The key light reduces the shadows of the blocks on the board significantly, and the fill/back lights accentuate it nicely.

Problems:
1. The key light creates a hot spot on the whiteboard if it’s not high enough
2. The whiteboard is flush against the wall, so the back light placement was limited, and wasn’t kind to the teacher’s bald head. Makeup and diffusion countered it nicely.

Thank you all for your help & advice.