A BRIEF GLOSSARY OF Zone System and Digital Terminology
Acutance — The term used to describe the degree to which a negative renders a sharp distinction between adjacent print tones. Acutance is related to negative contrast and shouldn't be confused with image sharpness or resolution. Dilute developers and long development times will increase acutance.
Banding — In a digital image, banding appears as distinct tonal steps where there should be a smooth continuous gradation. This is generally considered to be a problem that is caused by the loss of pixel levels when the image is edited in one of Adobe Photoshop's contrast adjustment tools like the Levels or Curves command. Posterization is another word commonly used to describe this effect. ...
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