When you are using your camera you can always protect the lens with an ultraviolet (UV) or haze filter. When you are not using the camera you should make sure you protect your lens with a lens cap. These items are inexpensive plastic caps that attach to the end of the camera lens. They only cost a few dollars, but they are protecting a lens which may cost thousands. They are designed to help protect the lens from scratches, dust, dirt, fingerprints and moisture. In photography, a lens cap is one of the best insurance items you can invest in as a new lens will cost you a lot more than a cap. Lens caps are made to fit all size lenses and can be bought for about $10 or less. You can also get cap leashes, which will keep your cap attached to the camera. It is a good investment as they are easy to lose.