Matrox RT.X2 User Manual page 81

• Plot Click this button to plot the luminance values in the current frame of
your clip to the histogram (the plot will reflect any color correction changes
you've made). Each luminance value present in your image appears as a
vertical line in the histogram. A longer line indicates a higher amount of
pixels in your image of that line's luminance value. You can drag the handles
in the graph to adjust the Input and Output levels for black and white, as
well as the Gamma .
0 1
Input
Black
Level
• Auto Black
The intermediate luminance values are proportionally redistributed.
• Auto White Click this to define the lightest pixels in your clip as white.
The intermediate luminance values are proportionally redistributed.
¦ Note
If you want to restore the default luminance values at any time, click
the Restore Default Values button.
3
2
0
2
Input Output
White Black
Level Level
Click this to define the darkest pixels in your clip as black.
4
1
3
Output
White
Level
Restore
Default Values
button
Creating a primary color correction
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4
Gamma