Halftoning is a printing technique that creates the illusion of continuous tones by using small dots of varying sizes and spacing. This method allows images to be reproduced with a limited number of ink colors, making it cost-effective for printing photographs and illustrations. The human eye blends these dots from a distance, perceiving a smooth gradient rather than distinct dots. This technique is commonly used in various media, including newspapers, magazines, and digital displays. The process was popularized by William Henry Fox Talbot in the 19th century and has evolved with advancements in printing technology, including digital printing and screen printing.