A 10-stop (ND3.0) IR top-quality Proglass neutral density filter, designed for 100mm (4x4) filter systems. Lee's Proglass IRND series provide uniform attenuation across the light spectrum, from visible to infrared light. Constructed from optical, scratch-resistant glass, the filter also has a gasket which, when used with the compatible 100mm (4x4") Lee filter system, helps prevent light coming between the filter and lens and creating unwanted exposure effects. Top quality materials also ensure a truly neutral filter, with no colour shift. The filter comes with an exposure guide for efficient field use and a padded storage case.