This is something I got from cinematography.net

Unfortunately I'm not sure why it matters what the FPS is when shoot a scaled model of an object (miniature), but this is what they say.

Frame-Rate times the Square Root of the Scale equals the Frames Per Second.

Using a film camera that has a frame rate of 24 frames per second, and a miniature at 1/36th scale, the equation would be like:

24 x 6 = 144FPS

You have to flip the scale so the larger number is on top. In this case 1/36 scale became "36/1".

So here's my question, if you've heard of this, would I use the same FPS for a digital camcorder as for film? Digital film is 30 frames per second, not 24. My model is 1/49th scale, which means using the 24fps equation the FPS i shoot on would be 168. Now if I did 30fps equation, it would be 210FPS.

I guess I could try both to see how it turns out, but frankly, I still don't understand why exposure matters.