Setting The Matte Density - Blackmagicdesign Ultimatte 12 Operation Manual

To perform a screen correction:
1 Remove all the foreground elements in your scene so only the backing screen is visible.
2 Select the 'matte' settings from the main menu buttons.
3 In the 'groups' section, select 'matte process'.
4 Press the 'screen capture' button. This stores a snapshot of the green screen which
Ultimatte uses to generate the screen correction.
5 Now replace all the foreground elements into your scene.
6 Press the 'screen correct' button.
Your Ultimatte will now analyse the foreground elements against the captured image and
determine the optimized matte.
NOTE When using the screen correction feature, it's best to perform this function once
the camera is set and in place, because once the camera moves, screen correction will
no longer be effective and you will need to reapply the screen correction.

Setting the Matte Density

If the matte needs some refinement, the first step is to adjust the matte density. This improves
the black areas of the matte so it is opaque. Any gray areas inside the black matte will cause
the background to show through the foreground in those areas.
To adjust the matte density:
1 Tap the 'matte' menu button to open the matte settings.
2 Rotate the matte density control knob counterclockwise to decrease the matte density
until you start seeing the gray areas inside the black silhouette.
3 Now increase the matte density setting until the gray areas are no longer visible.
Be sure to stop adjusting as soon as the gray areas disappear. This is because the least
amount of adjustment will result in a more convincing composite. This is true for most
controls when refining your composite.
You should now see a near perfect composite on the program output. Now you can use the
additional matte settings, foreground, background, and layer settings to refine your composite.
Quick Guide to Building a Composite 21 21