Color filters are transparent materials that allow certain wavelengths of light to pass through while blocking others. They are commonly used in photography, theater lighting, and scientific applications to enhance or modify the colors of light. For example, a red filter will only let red light through, making other colors appear darker or even black. In addition to artistic uses, color filters are also important in various technologies, such as LCD screens and cameras. They help improve image quality by reducing glare and enhancing contrast. By selectively filtering light, these tools enable better visual experiences in both everyday life and professional settings.