Canon 52mm UV Protection Filter The Canon 52mm UV Protector Filter is a general use, clear filter that helps to protect your lens from dust, scratches, moisture, and other elements. It is ideal for leaving on a lens at all times as it also helps to provide an additional level of assurance against accidental drops. This filter also features a UV coating to help absorb ultraviolet light and reduce the bluish cast of daylight. No additional coloration or contrast is provided, allowing you to pair this filter with others. - General protection filter reduces dust, moisture, and scratches from reaching lens elements. - Absorbs UV light and reduces bluish cast of daylight. - Clear filter provides no additional coloration or contrast, allowing you to pair this filter with others. - Made in Japan.