[mlyle]

You can filter that to be as small as you'd like. Also, it can intrinsically matter much less; if you're switching at, say, 1MHz (which can be desirable for smaller inductors), you're talking about thousands of cycles of ripple in each frame.

Assuming you're using a global shutter camera: even if the ripple is completely unfiltered, the only remaining intensity effect would be that some frames get 8000 "blinks" in a frame and some get 8001.

Already, stage and film lighting is a relatively small market compared to the entire lighting market, but it's not so small that NRE can't be spread across a lot of units.