This 3-stop, 82mm Wolverine Combination Magnetic ND & CPL with Adapter Ring from Kase can be added to other Kase Wolverine Magnetic filters or on its own with the supplied lens adapter. The filter's 0.9 density creates a darkening of an entire image without affecting the image's coloration, allowing you to photograph with a wider aperture or slower shutter speed without overexposing your image. By increasing your aperture or slowing your exposure time, you can control depth of field and convey movement more easily. The circular polarizer component makes it possible to reduce reflections and glare from non-metallic surfaces. The multi-layers of anti-reflection coatings help prevent internal ghosting and reflections, and improve color fidelity. The filter is made specifically to fit within an included Kase Magnetic Lens Adapter Ring for Wolverine Magnetic Filters.