Screen frequency refers to the number of rows of halftone dots per inch in a printed image, commonly measured in lines per inch (lpi). It determines the detail, sharpness, and overall quality of printed photographs and images. Higher screen frequencies produce finer, more detailed images, while lower frequencies result in coarser, more noticeable dots.
Photographers and print professionals use screen frequency to match images with specific printing processes, ensuring optimal reproduction of tonal range and clarity. Understanding screen frequency is essential for achieving high-quality prints in magazines, books, and other professional publishing projects.