Compositing CGI with Bigger Node Trees - Nuke 101: Professional Compositing and Visual Effects - page 128

1. Click Unpremult3—this should be the one downstream from the Inc pass Shuffle
node—and press the G key to insert a Grade node.
Because you'reafterabrighterversionofthefurcolor,itwouldbeagoodideato
start by picking the color from the Viewer and then making it a little brighter.
2. Click the Sample Color From The Viewer button next to the gain slider ( FIGURE
3.41 ) .
Figure 3.41. Honestly, they should have thought of a shorter name for this
little button.
3. Hold Ctrl/Cmd-Shift in the Viewer and drag a box around the bright orange area
of the lemming's fur—near his shoulder.
Note
Three modifier keys change the way sampling colors from the View-
er works. The Ctrl/Cmd key activates sampling. The Shift key en-
ables creating a box rather than a point selection. The resulting color
is the average of the colors in the box. The Alt/Option key picks the
input image rather than the output image—meaning, picking colors
before the Grade node changes them.
4. Click the Sample Color From The Viewer button again to turn it off.
5. To make the color brighter, click the Color Picker button for the Gain property to
display the Color Wheel and Color Sliders panel ( FIGURE 3.42 ) .
Figure 3.42. The Color Picker button, in case you forgot what it is.
6. Drag the V slider up to a value of about 1.0, and then close the Color Wheel and
Color Sliders panel ( FIGURE 3.43 ).