Both of you are right -- under different variables
RealNC wrote:Also, if you get too low with the persistence, then you see only black.
If you don't increase brightness, that's correct. Eventually, there's too photons to register with human vision.
thatoneguy wrote:Not necessarily. That depends on the brightness output, currently we don't have bright enough displays to pull it off now but that may change in the future
Yes, if you double brightness (e.g. double the number of photons per microsecond) while halving strobe length, you can maintain brightness level.
For example -- human eyes can see a one-millionth-second flash -- but it has to be an insanely bright flash in an insanely short time period. 1000 times brighter than an equivalent millisecond flash, to be specific. Not possible to do with current monitor backlights, alas.
Some monitors can boost strobe backlights by about 3x brighter during their flashing. This is how LightBoost does it
. Many LEDs can be overdriven harder without long-lasting effect, if they're flashed more briefly. But there's a limit.