Analog Way Smart MatriX LE - Manual (Page 33)

For Luma Key:
Luma Keying is used to key from a particular luminous intensity. It produces a hard edged key based
on intensity, which is most suitable for titling effects. You can choose to key things that are extremely
dark or extremely bright and keep everything in between, or invert to key only things that are of a me-
dium intensity.
The black and white levels define where to begin the keying. In the range 0 to 255, 0 represents no
luminance, or black and 255 represents full luminance, or white.
- Level Black: As the Black Level is changed from 0 to 255, things that are black are first keyed out,
followed by dark grey, then light grey, and so forth, until the entire picture is keyed out at 255.
- Level White: As the White Level is changed from 255 to 0, things that are white are first keyed out,
followed by light grey, then dark grey, and so forth, until the entire picture is keyed out at 0.
White level Black level
Keyed Away Keyed Away Visible Picture
Non-Inverted Mode
For Chroma Key:
Chroma Keying is used to key from a particular color. It produces a soft-edged key which is most suitable for
moving images and “weatherman” style applications.
Color grabber:
Select Chroma Key menu --> Select Color grabber menu
Using a crosshair, you can select a particular hue based on what is on screen. Once you have adjusted the
crosshairs to a desired position, press set/enter to capture the color value at that instant. You can then adjust
the other parameters such as Tolerance to further refine your key.
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Once your keying mode is selected, the Smart MatriX LE provides you some keying advance setting: