athletes, crisply. Diminished light admittance at high shutter speed can be compensated by boosting the exposure / aperture.
Exposure / Aperture
Exposure refers to the exposure of the imager to light. While shutter speed governs the interval of exposure, the iris — more specifically, the aperture — controls the amount of light let in at any given interval. The wider the iris, the bigger the aperture, the smaller the F-stop (the measurement of exposure), and the more light that is let into the lens, resulting in a brighter picture.
Gain refers to the amplitude or strength of the video signal. On some consumer camcorders, one can boost this signal, increasing the amplitude, or gain. This allows for better low light performance, as the image becomes generally brighter, but it’s often at the expense of clarity, as noise increases as well. Gain is