In photography, definition is a subjective term used to describe the clarity, sharpness, and level of detail visible in a negative or print. High definition indicates that fine details, edges, and textures are rendered clearly, while low definition may appear soft or lacking in detail. Definition is influenced by factors such as lens quality, focus accuracy, film or sensor resolution, and image processing techniques. Achieving good definition is essential for producing crisp, high-quality photographs with strong visual impact.