What is value in photography?

Value in photography refers to the range of lightness and darkness in an image, typically described in terms of shades of gray. It can also refer to the degree of contrast between the light and dark areas of an image. Good use of value can help create depth and dimension in a photograph, as well as convey mood and emotions. When composing a photograph, paying attention to the value of different elements in the scene can help create a more visually interesting and balanced image. In post-processing, adjustments to brightness and contrast can be used to manipulate the value of an image.