Unlike the human eye, color cameras are sensitive in the near-infrared (IR) portion of the spectrum. This can cause an image to appear unnatural. When using a color camera and imaging with white light, it can be beneficial to block near-IR light in order to achieve natural, realistic colors.

In contrast to near-IR pass filters, near-IR blocking filters block all or selected near-IR (and sometimes red) wavelengths. This is particularly important in color imaging applications to enhance image quality. Near-IR block filters can also be used with a monochrome camera, to fix problems caused by overly bright lighting conditions, such as molten metal inspection.
Light Balancing Filters correct artificial lighting, so colors appear more natural.