Touring the Interface with a Basic Composite - Nuke 101: Professional Compositing and Visual Effects - page 57

and hold down Ctrl/Cmd to move in smaller increments. You need a
keyboard with a numeric keypad for this.
3. Position the doll according to Figure 2.25 by using the on-screen controls, or
simply type in the following values for the corresponding properties in Trans-
form1's Properties panel:
• Translate.x = 1048
• Translate.y = −20
• Scale = 0.606.
Color correcting the image
Thecolorofthedollisn'texactlyright.It'salmostamatch,butthedollistoocoldincolor
and too bright in relation to the background. You can fix this using the Grade node in the
Color toolbox.
Note
Remember that you cannot color correct premultiplied images. Find the right
place in the branch to insert the color correction node.
Theprecedingnoteposesaquestion:How,orrather,where,areyougoingtocolorcorrect
the doll image? One way to color correct it is to unpremult the image after the transform-
ation, color correct it, and then premult it again. However, there is really no reason to do
that. The great thing about the node/tree paradigm is that you have access to every part
of the comp all the time. You can simply color correct the doll image before you premult
it—right after the Read node.
1. Select Read2.
2. Press G on the keyboard to create a Grade node between Read2 and Premult1.
Alternatively, you can pick a Grade node from the Color toolbox.
TheGradenodegivesyoucontroloveruptofourchannelsusingthefollowingproperties:
Blackpoint, Whitepoint, Lift, Gain, Multiply, Offset, and Gamma. These properties are
covered in Chapter 4 .
You are now going to learn how to manipulate various types of properties in a Properties
panel. Grade1's properties will come to your aid.