Touring the Interface with a Basic Composite - Nuke 101: Professional Compositing and Visual Effects - page 63

Where'syourslidergone?EverypropertyintheGradenodecancontrolallfourchannels,
RGB and alpha, separately, but how can this happen with just one slider? As long as all
four values remain the same, there is no need for four different fields, so there is just the
one field with a slider. However, when the colors for the different channels are different,
the slider is replaced by four numeric fields—one for each channel.
You can switch between the one slider and the four fields using the Individual channels
button to the right of the Color Wheel icon. If you have four fields and click this button
you are back to only having a single field. The values you had in the first field will be the
value of the new single field. The other three values will be lost.
Using the Animation menu
TheAnimationbutton/menuontherightsideofanypropertydealswithanimation-related
options. Choose options from this menu to create a keyframe , load a curve onto the curve
editor ,andsetthevalueofapropertytoitsdefaultstate.TheAnimationmenucontrolsall
valuesgroupedunderthisproperty.So,inthefollowingexample,theAnimationmenufor
theGammapropertywillcontrolthevaluesforR,G,B,andalpha.Ifyouright-click(Ctrl-
click) the field for each value, you get an Animation menu for just that value ( FIGURE
2.31 ) .
Figure 2.31. The Animation menu controls a property's value curve and animation-
related functions.