What Do We Mean by Saturation When Talking About Photography?

In photography the term ‘saturation’ describes the depth or intensity of color present within an image. Saturation is also referred to as ‘chroma’; The more saturated an image is the more colorful and vibrant it will appear, less color saturation will make an image appear subdued or muted. Black and white images contain no color saturation, instead being rendered in greyscale tones. The saturation levels of an image can be altered by using filters to reduce the amount of certain wavelengths of light reaching a photographic recording medium, or in post processing using the saturation slider in digital image processing software.

High levels of color saturation in a vibrant scene. Dan Carr