Formatt Hitech 150x170mm 6x6.69 inch Neutral Density Reverse Graduate 0.6 Filter for Use with Lee 150mm Holder Systems

This is a specialty filter size that fits the Lee 150mm holder system Using a holder system allows you to purchase a single filter is usable on multiple lenses. Made from the highest quality optical resin available, with an index of refraction nearly identical to the finest optical glass. High scratch resistance, low material fatigue, and chamfered corners to resist breakage so the filter will provide years of service. Made in the UK using the world’s most advanced, computer-controlled filter manufacturing technologies.