Stiles' π-mechanisms
A plot of the π-mechanisms can be found in the image galleries here.
Stiles' standard t.v.i. template shape
Fechner fractions of the π-mechanisms
Stiles & Burch (1955) 2-deg, RGB CMFs
Stiles & Burch (1959) 10-deg, RGB CMFs
Stiles & Burch (1955) 2-deg, rgb chromaticity coordinates
Stiles & Burch (1959) 10-deg, rgb chromaticity coordinates 