Featuring a new quick release design, the new M10 filter holder allows for fast filter installation and ease of operation. Install the adapter ring first, then the holder, then it's just an easy "drop-in" process to insert filters. Once the top gear is rotated, the CPL will rotate smoothly. The 100mm M10 filter holder is made of aircraft grade aluminum and PC materials, resulting in a strong and durable filter holder that is also lightweight. The M10 holder is designed to allow the use of up to 2 filters (100x100mm or 100x150mm) as well as the round CPL on a full frame camera at a focal length of 16mm without vignetting. A full 360-degree light gasket is installed to prevent light leakage in long exposures. Haida's latest line of Red Diamond filters promise all the advantages of Nanopro filters and are designed to be the toughest filter line in Haida's current offering. Red Diamond filters feature a scratch and impact resistant design, making them ideal for the tough challenges of outdoor landscape photography. Haida Red Diamond filters feature an ultra-fine multi-coating that preserves excellent image sharpness as well as delivering true color with zero color cast. The Red Diamond series is twice as strong as a regular glass filter, providing a low risk of accidental breakage. An ND filter provides solid stop-down exposure, creating a darkening of the entire image and allowing you to photograph with a wider aperture and slower shutter speed. By slowing down your exposure time or increasing your aperture, you can control depth of field and convey motion more easily. The M10 NanoPro Multi-Coated Drop-In Filter features anti-color cast properties and conveniently fits into the dedicated slot of the M10 filter holder. Neutral density filters provide darkening of the entire image without affecting image quality, and allow the use of slower shutter speeds and longer exposures.