In photography, clearing time refers to the period it takes for a film emulsion to lose its milky or cloudy appearance during the fixing stage of processing. Proper clearing time is essential to ensure that all undeveloped silver halide crystals are fully removed, resulting in a stable, archival-quality negative or print. Monitoring clearing time helps prevent image degradation, streaks, or uneven tones, making it a crucial step in both black-and-white and colour film development.