ISO 15781:2013 specifies how to measure and report the shooting time lag, shutter release time lag, shooting rate and start-up time for digital still cameras, including camera modules in phones and tablet computers. It includes a method that uses control signals inside the digital still camera and a method that determines the timing values without requiring access to the inside of the digital still camera.
Depending on the method used to start the timing device, there may be a time lag between the activation of the timing device and the closure of the exposure switch of the digital still camera.This International Standard does not address the measurement of auto focus accuracy and speed at low light conditions.
