colour.constants.KP_M

colour.constants.KP_M = 1700.0

Rounded maximum scotopic luminous efficiency \(K^{\prime}_m\) value in \(lm\cdot W^{-1}\).

KP_M : numeric

Notes

  • To be adequate for all practical applications the \(K^{\prime}_m\) value has been rounded from the original 1700.06 value.

References

[Wyszecki2000s]