The Edge 35 Filter Adapter attaches around the Lensbaby Edge 35 Optic, and allows the use of 62mm filters. Simply slide the filter adapter over the top your Edge 35 Optic and tighten it down using the tension lever on the side and screw on your favorite 62mm filter.
Neutral density filters and polarizers can be useful tools combined with the Edge 35 Optic. Neutral density filters allow you to shoot at bright apertures for maximum Edge effect, even in bright sunny conditions. Polarizers help you bring out color and detail in the sky and get rid of unwanted reflections, helpful for shooting landscapes.