Using the Luma Key Function
The Luma key function allows the krossfour to ignore black, white, or grays in a video source, and allows the second channel to pass through in the black, white or gray areas�
1. Select two different input sources for channels 1 and 2 - make sure that channel 2 source has black, white or gray in it. 2. 3. 4. Move the cross-fader to the far-right position. Move the mode switch located on the front panel, to position 4, labeled L-K. Using the fine-tune knob located on the front panel, eliminate or key out black, white, or grays from the channel two source. You will see the image from channel 1 passing through, but only where black, white, or grays used to be.
Combining Features and Functions
The krossfour contains many unique features and functions. The real magic for a visual performance begins when these features and functions are combined. Here are some examples: 1. Stutter Effect
a. b. c. d. e. f. g. Assign same video source to both channels Put cross-fade curve to 4th position Set the mode switch to Black (B). Apply HOLD to channel B Move cross-fader back and forth over the cut off point creating a stutter effect. Release HOLD and repeat process (steps d-g) as video advances. Experiment using different fader curves.
2. Background Effects using the Luma Key
a. b. c. d. e. f. Select an empty input on channel A resulting in a blue background Select video source on channel B Set mode to Luma-Key (L-K) Move Fader all the way to channel B Rotate fine tune knob to key out light and dark info on channel B Blue background on channel A is revealed
Variation 1 on this effect:
a. b. c. d. e. f. g. h. i. Select empty input on channel A Set the mode switch to White (W). Press input button twice on channel A so that it begins blinking You should now see a white background Press HOLD on channel A Set the mode switch to Luma-Key (L-K) Move Fader all the way to channel B Rotate the fine tune knob to key out black, white, or grays on channel B White background on channel A is revealed
Variation 2 on this effect:
a. b. c. d. Follow above steps for either blue or white background Set cross-fade curve to position 2 (fade to background) Move cross-fader to middle Adjust fine tune knob change value of keyed out colors
