Many cases? The article speaks of one phone model doesn't support it and whose spec sheet never said it did, if I'm reading it right I did notice with a daylig

Many cases? The article speaks of one phone model doesn't support it and whose spec sheet never said it did, if I'm reading it right I did notice with a daylight lamp, which seemed to instantly go from 0 to fully bright, that my phone would show a left to right progression on some recordings regardless of the lamp's orientation. This must be the sensor being scanned from left to right, but for all I know it completes each scan at the indicated frame rate. If there were interpolation, I'd expect to see things like the microwave digits to appear in a half-on state for each interpolated frame. I can check again but don't think this happened to anything where no half-states are expected Anyway, when measuring things between a dozen and a gross amount of milliseconds, also the cheap 240 fps (~4 ms) slow motion cameras will be able to give a good estimate. If you think you're capturing 960 but it's actually half, that's lying to the consumer but still a decent measurement