Additional Background Settings; Background Filter; Background Gradient; Test Signal - Blackmagic Design Ultimatte 12 Manual De Instrucciones

Additional Background Settings

Background Filter

In many situations, particularly with computer generated backgrounds, the graphics will appear
too sharp compared to the foreground subjects. Sometimes, this sharpness can cause aliasing
artifacts if the antialiasing filters are not set properly in the background rendering system.
Advancing the background filter control will gradually apply a horizontal low pass filter to the
background scene, minimizing aliasing artifacts.

Background Gradient

Enabling this button will replace the background video with an internally generated horizontal
gradient signal. This gradient signal can be used to better demonstrate the impact of
background color controls on the background image.

Test Signal

This setting lets you use a colored field as the background in the final composite.

Additional Layer Settings

Test Signal
This setting lets you use a colored field as the layer source in the final composite.

Lighting

Green screens are best optimized when lit flat in neutral light so there are minimal changes in
colour and brightness. This can add interesting challenges if you want to create lighting effects
on the set as the lighting can spill onto the green backing affecting the strength of your key.
As a helpful and convincing alternative, you can use the lighting feature to simulate lighting
effects in your composite. For example, you may have pillars of atmospheric spotlights shining
down on your talent. By using an image connected to the layer input that is designed for a
spotlight effect, you can blend that image into the foreground layer. You can even create an
animated image that lets you create dynamic moving lighting effects that are very realistic.
TIP The lighting feature is most realistic when the lighting image used for the
foreground lighting effect is also integrated into the background layer when designing
your background image. This lets both the foreground and background share the
effect which makes the overall simulation more convincing.
To enable the lighting feature, select 'layer' from the main menu and then 'lighting' from the
'groups' menu. Now select 'lighting' from the 'functions' menu.

Lighting Control Knobs

Minimum Level
This control determines a mixture of the level of the 'lighting' input and an internal
lighting level setting. The range of the minimum level control is from 0% to 100%, with
the default setting at 25%.
At 0%, the lighting of the foreground subjects is entirely controlled by the 'lighting' input
image. At 100%, the lighting of the foreground subjects is entirely controlled by the
lighting level R/G/B and Master Controls settings.
Changing Settings 32