This slider (with my Logitech C920) kinda does not make sense for me, and presumably most users:

I don't think people who are not quantum physicists think in microseconds, I can't even mentally calculate what this means in everyday units without asking a search engine calculator.
"Seconds" would make a lot more sense for the human mind to wrap around them, i.e. instead of 25000 microseconds you'd get 0.025 seconds, and instead of 204600 microseconds you'd get 0.2046 seconds, which is much closer to practical everyday units (short of being able to somehow provide a "frames per second" unit instead…).