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proposed functions

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The functions listed below are the results of our collaborative research on human cone spectral sensitivities and luminance sensitivity.  They represent a consistent set of functions tabulated at step sizes of 0.1, 1 and 5 nm, which can be downloaded and used to model and predict normal and dichromatic color vision for standard target sizes of 2-deg and 10-deg diameter.   For further details and references follow the links below.

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Cone Fundamentals

2-deg fundamentals based on the Stiles and Burch 10-deg CMFs adjusted to 2-deg

Units	0.1 nm steps	1 nm steps	5 nm steps	Stockman and Sharpe (2000) 2-deg cone fundamentals
Quantal (log)
Energy (log)
Energy (linear)

10-deg fundamentals based on the  Stiles and Burch 10-deg CMFs

Units	0.1 nm steps	1 nm steps	5 nm steps	Stockman and Sharpe (2000) 10-deg cone fundamentals
Quantal (log)
Energy (log)
Energy (linear)

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Luminous efficiency functions

2-deg functions

Units	0.1 nm steps	1 nm steps	5 nm steps	Sharpe, Stockman, Jagla & Jägle (2005) 2-deg photopic V*(l)
Quantal (log)
Energy (log)
Energy (linear)

10-deg functions

Units	0.1 nm steps	1 nm steps	5 nm steps
Quantal (log)
Energy (log)
Energy (linear)

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Chromaticity coordinates

0.1 nm steps	1 nm steps	5 nm steps	MacLeod-Boynton chromaticity coordinates based  on the Stockman and Sharpe (2000) functions

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Prereceptoral filters

Macular pigment

0.1 nm steps	1 nm steps	5 nm steps	Bone, Landrum and Cairns (1992) macular pigment density spectrum

Lens

0.1 nm steps	1 nm steps	5 nm steps	Stockman, Sharpe and Fach (1999) lens density spectrum

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Photopigment spectra

0.1 nm steps	1 nm steps	5 nm steps	Based on the Stockman and Sharpe (2000) cone fundamentals

Stockman and Sharpe's template equation

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