24fps pans don't flicker, but they do easily lose the sensation of motion and look like a series of static pictures, even with perfect zero-judder frame timing.

24fps pans don't flicker, but they do easily lose the sensation of motion and look like a series of static pictures, even with perfect zero-judder frame timing. This can feel a lot like flicker, and even if you can perceive it as motion it's still very bad looking motion. Closed down shutter angles are only needed to mitigate the blur of low frame rates. If you're shooting at 120fps you can use a fully open shutter (which helps with the lighting requirements too), which gives you a choice of 5 different simulated shutter angles when you downsample to 24fps by blending frames. Blending 2 consecutive frames then deleting 3 gives you a look very much like modern 24fps film.