UV Filter‎:‎ UV filters are used to reduce haziness created by ultraviolet light‎,‎ to which photographic film and sensors are sensitive‎,‎ but not the human eye‎.‎ A UV filter passes all or most of the visual spectrum‎,‎ and blocks ultraviolet radiation‎.‎ It can be left on the lens for nearly all shots‎:‎ UV filters are often used mainly for lens protection in the same way as clear filters‎.‎ Why use of protection UV filters‎?‎ 1‎.‎ If the lens is dropped‎,‎ the filter can protect the front lens from suffering scratches or breakage‎.‎ 2‎.‎ The filter can be cleaned frequently without damage to the lens surface or coatings‎,‎ a filter scratched by cleaning is much less expensive to replace than a lens‎.‎ 3‎.‎ If there is blowing sand the filter may protect the lens from abrasion from sand‎.‎ Features‎:‎ Well protect your camera lens from scratches‎,‎ dust‎,‎ dirt‎,‎ moisture and fingerprints Reduce unwanted ultra‎-violet light and atmospheric haze which its caused by blue radiation and ultraviolet Can be used with both auto focus and manual focus cameras and lenses Fits any lens with a 40.5mm filter thread‎,‎ manual or autofocus‎,‎ digital or film Serves as a great and inexpensive lens protector A must have accessory for every photographer‎'‎s kit             Size‎:‎ 40.5mm Type‎:‎ UV Filter   Package weight‎:‎ 0.059 kg Product size ‎(‎L x W x H‎)‎‎:‎ 4.2 x 4.2 x 0.6 cm / 1.65 x 1.65 x 0.24 inches Package size ‎(‎L x W x H‎)‎‎:‎ 7 x 7 x 1.6 cm / 2.75 x 2.75 x 0.63 inches Package contents‎:‎ 1 x 40.5mm Camera UV Protection Filter Lens for Canon Nikon Sony‎,‎ 1 x Plastic Case