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Author Steve Wright explores the new features found in the 3D digital compositor Nuke 6. The course introduces the RotoPaint node for drawing and painting effects, the Keylight keyer for creating mattes and composites, and the SplineWarp node for warping images. The course also explains how to merge keys, animate with keyframes, and create image-based blurs. Exercise files accompany the course.
Nuke 6 New Features was created and produced by Steve Wright. We are honored to host his material in the lynda.com Online Training Library®.
Now, let's talk about the Screen Matte menu. This popup menu contains additional controls for refining the screen matte or the key. Clip Black pulls down on the black part of the picture. So, if I click and drag right, you see I am inching this up to the right. It's increasing the contrast though, but just by pulling down on the blacks only. Of course, as you know, I'm losing edge detail as I do that. As I back this in, you can see the edge detail coming back. Restore that to default.
Clip White pulls up on the whites and you can see that here, as I inch this down, it's making the matte harder and harder in the core. But it's also expanding the core matte into the corners of this fine detail here. If I set that back to default, you can see the effect that has. Clip Rollback is a modifier for the Clip Black and White. I am going to throw in a little bit of Clip Black. You'll notice how it has degraded the edges. But as I adjust Clip Rollback it attempts to restore some of the detail in the blacks.
I'll restore the Clip Black, I'll reset the viewer, and we'll zoom into this area here to show a Clip White Rollback. We'll use this region here to look at the Clip White Rollback. If we look at the green screen, the source, we can see this is supposed to be a semi-transparent region. So, we'll go back to our Screen Matte. If I adjust the Clip White, it starts to fill it in solid, then I can adjust the Clip Rollback to push it back to semi-transparent. Okay, we'll set the Clip Rollback to default as well as the Clip White and rehome the viewer.
Now, let's take a look at Screen Dilate. It does just what you expect. It will do a dilate or an erode on the finished key. So, we can dilate it or erode it. We set that back to default. Screen Softness applies a blur to the finished key. Dilate that in and our key gets softer and softer. Again, this is entirely different than the Screen PreBlur. This applies a blur to the green screen and then the key is pulled on the filtered green screen. This is applying a blur to the finished key.
Next, Screen Despot Black and White. We'll take a look at White first. First, we'll zoom in here to get a close look. So, I've got these white pixels here in the black zone. I might even adjust the Screen Gain to get rid of them. But if I adjust the viewer gamma I can see that they're still there. So, if you want to get rid of the white flecks in the black regions, that's what the Despot White is for. As, we will roll that up, boom! They disappear.
I think it's applying a median filter. We'll reset that back to default, reset the viewer gamma back to default and rehome the viewer. The Screen Despot Black does the same job, but for those black peppery pixels you get inside your solid core, typically from grain. Now, this particular picture doesn't have that problem, so I'm going to introduce it with this and now I've got grain holes all over my core matte. So, I am going to adjust Despot Black and make them go away, okay.
All right, I'll restore Despot Black to default, rehome the viewer, and remove my horrible Black Despot node. The last two items, Screen Replace and Screen Replace Color, we'll take a look at shortly.
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