Definitions for "Mid Tones"
An area of medium brightness, neither a very dark shadow not a very bright highlight. A medium gray tone in a print.
The tones in between the lightest and darkest areas of a photographic image. A predominance of mid tones creates a low contrast image. See Contrast.
The range of tones between the highlights and shadows of a photograph or halftone - between 30% and 75% value.