In video production, which adjustment would be altered to enhance overall brightness?

In video production, adjusting gain is effective for enhancing overall brightness. Gain refers to the amplification of the video signal, allowing for a brighter image without the need for increased light levels. By increasing the gain, the camera's sensitivity to light is heightened, which can lead to a brighter image in low-light situations. This makes it a valuable tool for achieving an adequately lit scene when natural or available lighting is insufficient.

Other factors like contrast or white balance play crucial roles in image quality, but they do not primarily influence brightness in the same way that gain does. For instance, contrast refers to the difference between the darkest and lightest parts of an image, which affects perceived depth and detail rather than overall brightness. Shutter speed controls motion blur and exposure duration, impacting how much light is captured per frame, but doesn't work as effectively as gain for directly enhancing brightness. Thus, adjusting the gain is the most direct way to enhance brightness in video production.