The Marumi DHG Circular Polarizer is a thin mount (5mm) Polarizer mounted in Aluminum, with a light transmission rating of 98% has a superior multi coating which is extremely scratch resistant and very easy to clean. Although the DHG Filters are slightly less expensive than the Super DHG filters, they still come with a great multi-coating that will help with flare and glare issues, they produce great images and are an asset to any photographer’s camera bag!