Real-world surface materials often reflect different proportions of energy in the specific
wavelength. Spectral reflectance curves of selected materials provide insight as to why
they appear as they do on black-and-white (tone) or color (hue) imagery.
Tone: Shades of grayscale (intensity) ranging from black to white from the individual bands.
Color: Hue and saturation of additive color combining of composite images from the
individual bands