equivalent contrast, C̃e

[5.9.14.5]

The actual equivalent contrast in a real luminous environment with non-diffuse illumination. The actual equivalent contrast C̃_e is less than the equivalent contrast C̃ due to veiling reflection. C̃_e = x CRF (see contrast rendition factor).

This term is obsolete.

NOTE: This definition was changed in ANSI/IES RP-16-17 Addendum 4.