Perception of color begins with specialized retinal cells containing pigments with different spectral sensitivities, known as cone cells.
12.
As I understand it, a digital camera only has 3 sensors for each pixel with different spectral sensitivities.
13.
When the sensor system is linear, its spectral sensitivity and spectral responsivity can both be decomposed with similar basis functions.
14.
This may have been due to the spectral sensitivity of early materials to blue, violet and ultra-violet light.
15.
The luminosity function that describes the perceived brightnesses of different wavelengths is thus roughly analogous to the spectral sensitivity of M cones.
16.
In some linear applications, the spectral sensitivity may be expressed as a spectral responsivity, with units such as amperes per watt.
17.
The spectral sensitivity of CdS photoresistors peaks for red light ( wavelength ? = 640 nm ) and extends up to 900 nm.
18.
This squid has three visual pigments located in different parts of the retina which likely allows color discrimination, each having distinct spectral sensitivities.
19.
Most wavelengths stimulate two or all three types of cone cell, because the spectral sensitivity curves of the three types of cone cells overlap.
20.
In photography, film and sensors are often described in terms of their spectral sensitivity, to supplement their characteristic curves that describe their responsivity.
