The Marumi Protect Filter Super DHG 37 mm is a neutral protection filter that safeguards the lens without unwanted filter effects. A standard protection filter often causes significant reflections and distortion on the camera sensor. This Super DHG protection filter features a special coating that reduces reflections from incoming light. The filter is made from the clearest type of glass and is water and dirt repellent. The protection filter does not extend the exposure time. Thanks to its thin frame, you won't experience vignetting issues with wide-angle lenses.