Spectral absorption curves of the short (S), medium (M) and long (L) wavelength pigments in human cone and rod (R) cells.
<a href="//commons.wikimedia.org/wiki/User:%D0%94.%D0%98%D0%BB%D1%8C%D0%B8%D0%BD" title="User:Д.Ильин">Д.Ильин</a>: translation, optimization
<a href="//commons.wikimedia.org/wiki/File:Cone-response-en.svg" title="File:Cone-response-en.svg">File:Cone-response-en.svg</a> by User:DrBob and User:Zeimusu.