The Marumi Protect Filter Super DHG 37 mm is a neutral protection filter that safeguards the lens without unwanted filtering effects. A standard protect filter often generates significant reflections and distortion on the camera sensor. This Super DHG protect filter features a special coating that reduces the reflection of 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 will no longer experience vignetting issues with wide-angle lenses.