Blackmagic Design Ultimatte 12 Manuel D'exploitation page 33

Color can be added to the Minimum Level by adjusting the Lighting Level Red/Green/
Blue and Master controls.
Lighting Level – Red/Green/Blue
This controls the red/green/blue components of the 'minimum lighting' as it is applied to
the foreground subjects. The control range is from 0% to 200%, with the default
setting at 100%.
Lighting Level – Master
The master control adjusts all three 'minimum lighting' level R/G/B controls
simultaneously while maintaining their individual setting relationships.
Layer Color Controls
When the 'lighting' feature is enabled, the 'layer white level, Black Level, Contrast, and
Saturation controls will make corresponding adjustments to the Lighting Input image.
For a detailed description of these controls, see Adjusting Brightness, Color, Contrast
and Saturation section of the manual.
Layer Input
Enabling this function allows the layer elements to be added to the composite scene.
Layer Input Realistic/Linear/Additive
This function selects between three modes of combining the layer input elements with the
foreground objects and the background scene in the composite image.
Realistic
Most accurate method of combining colored transparent and semi transparent layer
elements, as well as opaque layer elements, with the foreground objects and the
background scene.
NOTE When using a layer source graphic in realistic layer mode with semi
transparent objects, the image source background needs to be 100% white. The
RGB elements in the source layer should not be premultiplied by its matte. All
feathering of transition regions along edges of the matte should be within the
boundaries of the layer elements. For example, make sure feathered edges do
not extend into the white backing region of the source image.
Linear
Traditional method of combining opaque layer elements with the foreground objects
and the background scene in the composite image. This method will not produce
accurate results with transparent colored layer elements. This method should be
selected if the layer elements are not premultiplied.
Additive
Traditional method of combining opaque layer elements with the foreground objects
and the background scene in the composite image. This method will not produce
accurate results with transparent colored layer elements and should be selected if the
layer elements are premultiplied.
TIP Pressing the 'file clear' button will not change the layer input mode.
Changing Settings 33