A cold-light enlarger is a type of photographic enlarger that uses a fluorescent tube or cold cathode light source to produce highly diffused illumination. This soft, even lighting reduces harsh shadows and helps to create smoother tonal gradations in prints. Cold-light enlargers are particularly useful in black-and-white and fine art darkroom photography, as they minimize the appearance of dust, scratches, and imperfections on negatives, resulting in cleaner, more detailed photographic prints.