Ni030 filters feature uniform attenuation simultaneously over the visible and near-IR range that is imaged by most industrial CCD/CMOS cameras. That is, regardless of wavelength within this range, on average approximately 50% of the light will be transmitted while less than 10% will be reflected back towards the source or subject. These filters include identical male and female threads on either end so that they can be stacked with other ND filters to achieve various optical densities.