Colour separation is a photographic process in which an image is captured through a series of filters to produce three black-and-white negatives, each representing the red, green, or blue components of the original scene. These separations can then be combined during printing or reproduction to accurately reconstruct the full-colour image. Colour separation is fundamental in traditional colour printing, graphic arts, and film production, allowing precise control over colour reproduction, tonal balance, and image fidelity. Photographers and print technicians rely on this technique to achieve vibrant, true-to-life colour results.