The 150 x 150mm NanoPro MC ND Filter is designed for the Haida M15 filter holder. This square neutral density filter is 2mm thick and features a 4x filter factor, providing a 2-stop reduction in exposure across the entire image. This allows you to slow down shutter speeds to capture movement in your photos and use wider apertures in bright lighting situations.
Made of optical glass, the filter is designed to provide a neutral performance that leaves no color cast and preserves image sharpness. Applied on both sides are several layers of coating which help reduce ghosting and reflections. The coating also makes the surface resistant to scratches and repels water, making it easier to clean when using the filter in inclement conditions.