Discover Sigma Protector Filter, a simple and clear filter designed to provide general protection for your lens. Its 1x filter factor will provide a level of security that will keep your lens secure, without affecting the overall image quality. This filter will prevent dust, scratches, moisture, and other elements from reaching or damaging your lens and is multi-coated which helps to eliminate internal ghosting and reflections. It comes in different sizes: 46mm, 49mm, 52mm, 55mm, 58mm, 62mm, 67mm, 72mm, 77mm, 82mm, 86mm, 95mm, and 105mm.