A panchromatic emulsion is a type of photographic emulsion that is sensitive to all wavelengths of visible light, and produces a monochrome photograph—typically black and white. Most modern commercial
Original (color) photograph
Orthochromatic simulation
Black-and-white or monochrome images combine black and white to produce a range of achromatic brightnesses of grey. It is also known as grayscale in technical settings.
Panchromatic film
…panchromatic imagery having a pixel equivalent to an area 0.6×0.6 m (2×2 ft), while the multispectral pixels represent an area of 2.4×2.4 m (8×8 ft). Black and white Orthochromatic…
A black-and-white photo of a breadfruit plant, c. 1870
McDonald Lake, Glacier National Park, Montana – Ansel Adams – Taken between 1933 and 1942