## Stockman, MacLeod & Johnson (1993) 10-deg cone fundamentals (based on the
Stiles & Burch 10-deg CMFs)

### Data key

**Columns**

*Quantal *

- Wavelength (nm)
- log L-cone spectral
sensitivity
- log M-cone spectral
sensitivity
- log S-cone spectral
sensitivity

*Energy *

- Wavelength (nm)
- log L-cone spectral
sensitivity
- log M-cone spectral
sensitivity
- log S-cone spectral
sensitivity

### Notes

The proposed 10 deg cone fundamentals are based on
the CIE XYZ 1964 10-deg color matching functions.

From Stockman, MacLeod and Johnson (1993).

Columns 2, 3, and 4:
logarithms of proposed cone sensitivities based on the ,
and 10-deg CMFs of the CIE 1964
supplementary standard observer, derived from the following transformations,
and adapted for small field application through the corrections described
below:

(λ≤ 525nm)

The S-cone sensitivities have been extended at λ > 520
nm by using the following function:

(where λ is the wavelength in nm).

### References

Stockman, MacLeod and Johnson (1993). Isolation of the middle- and
long-wavelength sensitive cones in normal trichromats. *Journal of the
Optical Society of America A*, 10, 2491-2521