Apple Color 1.0 - Manual (Page 189)

Chapter 9 Primary In 189
The result is that the highlights correction that had been affecting the midtones has
been neutralized in the lower portion of the midtones.
Although making opposing adjustments to multiple color balance controls may seem
contradictory, it’s a powerful technique. With practice, you’ll find yourself instinctively
making adjustments like this all the time to limit the effect of corrections on
neighboring zones of tonality.
Curves Controls
The curves controls, located underneath the color controls in the Primary In room,
provide an additional method for adjusting the color and contrast of your images. If
you’re familiar with image editing applications such as Photoshop, chances are you’ve
used curves before.
The two main differences between the curves controls and the color balance
controls are:
 The curves controls let you make adjustments to as many specific tonal ranges that
you choose to define, while the color balance controls affect three predefined tonal
ranges.
 The curves controls each affect only a single color channel, while the color balance
controls let you quickly adjust all three color channels simultaneously.
 Curves cannot be animated with keyframes, although every other parameter in the
Primary In and Primary Out rooms can be.