Neat. The Blur Busters technique of modified mouse + high speed video.t2k wrote:Filming at 240hz I detect screen updates as low as *4ms* (a single 240hz frame) after the LED on my NES controller lights up.
Although 240fps high speed video has more error margin, it's definitely useful in your case for console 60Hz lag benchmarking!
BenQ does uses line-buffered processing -- but maybe not during 720p scaling for this model!t2k wrote:Mystery solved, case closed. My bet would be that the BenQ monitors have a single buffered frame internally for image processing, whereas the Dell must buffer much less - perhaps a line or two.
(TIL).