Matrox Electronic Systems Matrox RT.X2 - Manual (Page 90)

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Chapter 4, Setting Up Realtime Effects with Adobe Premiere Pro
¦ Note If you want to reset the hue, saturation, and luma key properties to the
default settings at any time, click the appropriate Reset button.
• Show Key Click this button to display the matte used to define your
selective key region. This enables you to further refine your key. Areas that
are completely affected by the color correction are white, untouched areas
are black, and gray areas are partially affected.
• Auto Key Click this button to automatically key on the most common
color at the current frame (except gray). Selecting Auto Key affects values
for the Hue Key , Saturation Key , and the Luma key properties.
Alternately, you can use the auto key eyedropper to select a color on which
you want to key.
• The auto key eyedropper can be used in two ways:
$
Click the eyedropper button and click on a color on which you want to key.
$
Click the eyedropper button and click and drag anywhere on your clip to
create a rectangular area containing the color on which you want to key.
The selected color will be an average of the pixel information contained
within the rectangle.
You can further refine your auto key color by using the plus and minus eye-
droppers.
For example, if you selected light red as your auto key color and would like a
dark red color in your clip to be included in the auto key, you can use the
plus eyedropper to select that dark red in your clip. To remove colors from
your auto key, use the minus eyedropper.
¦ Note The Show Key mode and any color correction applied will be
temporarily deactivated in the Program Monitor when using an eyedropper.
Saturation Key
Reset button
Auto key
eyedropper
Plus and minus
eyedroppers