A grey scale is a set of tones displayed in incremental steps from minimum to maximum density, ranging from black through various shades of grey to white. It is used to evaluate tonal reproduction and contrast in both film and digital photography.
Grey scales are essential tools for photographers, printers, and digital editors to ensure accurate exposure, consistent tonal balance, and proper image calibration. Understanding grey scales helps achieve professional-quality images with smooth transitions between shadows, midtones, and highlights.