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Make the picture Black and White (or Sepia toned)
There are two way to do this. You can use a keyer, or you can use the Video Processor.
- Using the Video Processor
The Video Processor controls are located in the "M/E" menu (from version 7 onwards). You can cause any background or keyer to be processed, but not an Aux Bus. (If you wanted to "correct" an in-vision monitor, you need to use part of an M/E row; perhaps use Split mode and send the corrected Utility Row via the M/E's Secondary partition, Output B.)
Select "Video Proc" in the M/E menu. Choose which M/E you want to correct, then choose which Bus (a background or a key). This exercise will assume Pgm/Pst Bkgnd-A.
In the "Function" column, touch the "Proc Amp" datapad. Adjust the Chroma Gain to 0.0%. Then turn ON the Proc Amp button. The source on the A-background will become monochrome.
For a Sepia tone, touch the "Pseudocolor" datapad in the "Function" column. Choose the "Color Modulation" mode. Touch the "White Becomes" datapad and adjust the hue to be 150 degrees, with the saturation 50%. (You may change these settings to your liking.)
When you introduce saturation into "white", the brightness will reduce. This may be compensated for by increasing the overall "Lum Gain" in the Proc Amp, but make sure you don't create signals which exhibit Gamut errors (combinations of chroma/luminance that are illegal when transformed into another video format).
If you operate with "Source Memory" active, only the source currently selected on this bus will be processed; Video Processing is an attribute of the Source. If Source Memory is off, everything selected on this bus will display the same processing.
When using Video Processing, the green M/E Status display will indicate "UNCAL" for this bus, to remind you that the source has been tainted.
- Using a keyer.
This is probably how you did it in the old days, if you were lucky enough to be alive then.
Select the source you want to process on a key row, and perform a "Fixed Lin" - "Video" - "Matte Fill" key over Black (or a Colour Background Generator). Set the Hue of the Matte Fill to 150 degrees, the Saturation to 50% and the Brightness to 100%. Keyed over Black, this will give identical results to the Video Proc (try it and compare). Keyed over a Colour Background, you can introduce a little colour to the dark areas.
If Source Memory is ON, keyer settings, colours and modes will change dependent on the source selected on the key bus.
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