A daylight tank is a light-tight container used for developing photographic film without the need for a darkroom. The tank allows film to be loaded, processed, and rinsed under normal room lighting, protecting it from unwanted exposure. Daylight tanks are essential for both amateur and professional photographers who work with 35mm, 120, or sheet film, making film development more convenient and accessible. Using a daylight tank helps ensure consistent results, reduces the risk of film fogging, and streamlines the film processing workflow.