Neutral Density Filters are designed to reduce light intensity neutrally over a specific wavelength range without affecting image color and contrast. They serve as "sunglasses" for your system and can be used with monochrome or color cameras. Neutral Density Filters are available in a variety of optical densities, reduce light intensity while maintaining a wide aperture and shallow depth of field, minimize pixel saturation and are stackable with other Neutral Density Filters to achieve custom optical densities.
Applications include imaging in intense lighting situations (i.e. molten metal and welding), outdoor aerial imaging and photography. Neutral Density Filters help reduce shutter speed to create blur, preventing a “jello” effect in aerial imaging.