What if all you have is a pair of Deity Microphone V-Mic D4 Duo and you need to record and shoot some (not-so) awesome piano? I will try to figure out an answer.
Problem 1: mic may not be able to handle the high dynamic range;
Problem 2: optimal mic placement may not be the optimal camera angle;
Problem 3: the stereo mic array is very close together but not pointing at the same direction, this is a physical limitation, and I will have to figure out how;
Putting the entire rig into a piano is a bad idea, it is a horrible idea, don’t even try it!