Lens caps are protective covers designed to fit over the front of camera lenses. They help prevent dust, dirt, and scratches from damaging the lens when it is not in use. Lens caps come in various sizes to match different lens diameters and are typically made of plastic or rubber. Using a lens cap is essential for maintaining the quality of your camera equipment. When you are ready to take photos, simply remove the cap and store it safely. Many photographers also use lens caps to protect their digital cameras during travel or storage, ensuring their gear remains in good condition.