Using scanning (or multiplexing) of an LED array, such as below:
Such that only one row is powered ON at any given time, would this cause a reduction in LED brightness?
My rationale is: In this 4x4 matrix, row 1 will only be turned on 25% of the time. This seems awfully similar to PWM control, which is also a common method of controlling LED brightness. In this example, would all the LEDs be operating at 25% of their maximum brightness?