CompuServe Messages

Following up on the "superBlack" comment. most video suites always set to zero black, however in order to get a good "Key" the background color or "key" must be at least 7 – 10 points below the level of the colors used. I've been experimenting with all posible combinations of Background to no avail. A work around was to use a down stream keyer and RGB camera and feed a dual input that effectively gave a negative black background. works sometime not others!