2017

Table Of Contents
(a) Front matte curve (b) Back matte curve (c) Front/Back box
2 Use the Viewing box to select the image you want to view as you adjust the curves.
To view:Select:
The composite clip.Result
The front matte. You cannot see changes made to the back matte when this view is selected.Matte
The back matte. You cannot see changes made to the front matte when this view is selected.Bmatte
The composite with a coloured background. The default colour is black. To select a different
colour, click the colour pot to the right of the Comp button. The colour picker appears.
Comp
3 To adjust the luminance curve for the front matte, select Front from the Front/Back box. To adjust the
back matte curve, select Back. Alternatively, click a curve to select it.
The selected curve changes to white.
(a) 255 (White) (b) Output (remapping of luminance values) (c) 0 (Black) (d) 0 (Black) (e) Input (current luminance
values) (f) 255 (White)
706 | Chapter 16 Chroma Keying and Working with Green Screens