PROTECT YOUR LENS WITH HOYA HD MKII PROTECTOR Don't risk scratches, dirt or bumps on your expensive lens glass. The HOYA HD Mk II PROTECTOR offers the ultimate protection for your lens. HD REINFORCED GLASS: The HOYA HD Mk II PROTECTOR comes with HOYA's top quality HD glass, which is a special, chemically enhanced optical glass – offering a four times better protection than conventional glass. This ultra-clear glass has absolutely no influence on the quality of your photo. The 16-layers anti-reflective high-transmittance multi-coating on both sides of the filter glass greatly reduces the chance of any reflections caused by the filter. As the coating comes with a water- and oil repellent feature while also being stain resistant, cleaning the filter is easy and stress free. The glass of the HOYA Mk II PROTECTOR is mounted with a special high-pressure press technology to the frame, giving it additional stability, which contributes to the sturdiness of the filter. The frame itself is ultra-thin, reducing the chance of vignetting immensely – making the filter absolutely compatible for wide-angle lenses. The HOYA HD Mk II PROTECTOR is one of the strongest protectors you can find. It is an ultimate clear filter that has absolutely no effect on the color balance or quality of your photo or the performance of your lens. It is especially recommended for advanced and professional photographers who need an extra robust, long-lasting protector for their daily shooting.