Introducing the 46mm MRC Nano Master #803 ND0.9 Filter from B+W - a meticulously crafted neutral density filter allowing precise control over exposure settings. Its uniform density across the image area decreases the depth of field, perfect for isolating the subject in even the brightest of conditions. Plus, with the option to reduce shutter speed, this top-of-the-line filter can create stunning motion blur or smooth out the flow of water for a polished look.