The Image Science Associates ColorGauge Nano Target has the identical 18 color patches as the GretagMacbeth™ ColorChecker®, plus 12 spectrally neutral grey patches to assess correct exposure and white balance in close-up or macro photography applications.

Gloss grey patches have an extended dynamic range (density ~ 2.4) and are suitable for measuring camera imager noise. Specular reflections from the gloss surface may occur for illumination geometries less than 45°/0° when used without crossed polarisers.