On Mon, 29 Dec 2003, Kris Modrak wrote: >I am trying get some idea of the delay between a real world event and the time >that the computer has access to data recording this event. I am using a Try connecting a LED into computer printer port and turning it on/off at some specific time moments and determining how much later you can capture an image showing the LED in the new setting from the camera. Note that the sample time is different depending on image position (the CMOS array is scanned row-by-row, usually).