Screening is the process of converting a continuous-tone image, such as a photograph, into a halftone image composed of tiny dots. This technique allows images to be reproduced in print using varying dot sizes to simulate different tones, creating the illusion of gradients and shading.
Screening is essential in printing and publishing, enabling detailed photographs to be accurately represented using standard printing presses. By understanding and controlling screening methods, photographers and print professionals can maintain image quality, tonal range, and clarity in reproductions for magazines, books, and other printed materials.