Apple Color 1.5 - Manual (Page 213)

Adjusting the Black Point with the Shadow Slider
The behavior of the Shadow contrast slider depends on whether or not the Limit Shadow
Adjustments preference (in the User Prefs tab of the Setup room) is turned on. (For more
information, see
User Interface Settings .)
• If Limit Shadow Adjustments is turned off: Contrast adjustments with the Shadow slider
are performed as a simple lift operation. The resulting correction uniformly lightens or
darkens the entire image, altering the shadows, midtones, and highlights by the same
amount. This can be seen most clearly when adjusting the black point of a linear
black-to-white gradient, which appears in the Waveform Monitor as a straight diagonal
slope. Notice how the entire slope of the gradient in the Waveform Monitor moves up.
213 Chapter 9 The Primary In Room