Keying - Nuke 101: Professional Compositing and Visual Effects - page 302

• Primatte: Thisplug-infromImagicaCorp.isbundledwithNuke.Itisoneofthree
industry-leading keying plug-ins available. (Primatte, Keylight, and Ultimatte all
come with Nuke.) This is a great keyer that can key any color and reach very high
levels of detail and control. It has control over matte, edge, transparency, and fill.
Primatte is not available in the PLE version of Nuke.
• Keylight: This plug-in from The Foundry is included free with Nuke. It only keys
blue and greenscreen—and it does the job very well, producing results I find un-
precedented.
• Ultimatte: This plug-in from Ultimatte is also bundled with Nuke. Yet another
great keyer, it has control over the matte, edge, transparency, and spill.
Now, let's jump right in and try a few of these keying nodes.
1. Go to your chapter07 directory and bring in bg.png and gs.tif.
2. Select Read2 (this should be the greenscreen element) and view it in the Viewer.
This is a pretty flat greenscreen element. Then again, even if it is, as always, it will still
pose all sorts of problems. There are a lot of wispy hairs that can hopefully be retained,
and also a fair amount of green spill on the white areas in the woman's shirt and the dark
midtones of her skin tone that will need to be fixed.