Choose your reply from the options at the end. Does "If the noise-based speed (40:1) is lower than the saturation-based speed, or undefined because of high noise, the saturation-based speed is specified, rounded upwards to a standard value, because using the noise-based speed would lead to overexposed images." contain the correct answer to "When should the noise-based speed be used?"
Pick from:
[1]. yes;
[2]. no;
[2].