Grass Valley DD35 Family v.3.1.5 - Manual (Page 71)

2. Panel Operation DD35 Production Switcher
2 – 37 Operating Instructions – Rev. 16 / 10.2001
Lum Key eq Is automatically switched on in the Self Key mode
(key fill signal corresponds to the key source signal).
Thus, dark halo effects at edges and soft transitions are
avoided.
Lum Key Is automatically switched on when Fill and Source do not
have the same source (Non Self Key).
Fill matte, Key invert, Border on also switches to Lum Key.
Note: Please note that P/S/S = ON forcibly switch Lum Key eq off.
Lin Key Pressing the two buttons Add / Lin and Lum / Lin sets the luminance key to a linear
mode. The key control signal corresponds to the non-amplified and unlimited lumi-
nance signal.
Chr Key Button Chr Key serves to select the Chroma Key mode. In this mode, the key con-
trol signal is derived from the chrominance components of the key source signal.
Any color may be keyed.
The DynaChrome
t
key mode ensures that all details in the fill signal, such as
smoke, shadow, or glass, are preserved true to the original. In this mode, the key
color is proportionally subtracted from the key fill signal in the key area. The back-
ground signal is multiplied with the key control signal and added to the “cleaned”
fill signal.
For further information please refer to section Chroma Keyer.
Note: Please note that P/S/S = ON forcibly switches over to FGD-Fade.
FGD Fade When the Foreground Fade function is enabled, the key in the control signal serves
to fade between the background signal and the “cleaned” key fill signal.
Note: Please note that DynaChrome
t
can only be used without Fore-
ground Fade for Self Key (identical fill and source signal). If you are
not working with Self Key or in case of a border, Foreground Fade will
automatically be switched on without special indication.
Mask Key Button Mask Key serves to select the mask chosen in the Masks panel as a key
signal.
For further information please refer to sections Masks Panel, Wipe Panel and
Stores Panel.
Note: If the function KEY MEMORY is activated, the operation modes Mask
key and Pattern key can be switched off by a renewed pressing of
the corresponding button.
The mixer returns to the status (see Key Memory) of the last stored
“natural” key (Add, Lin, Lum or Chroma key) with all settings.
If the operation modes Mask key and Pattern key are switched off
by a direct selection of the key modes Add, Lin, Lum or Chroma key,
the former settings are only available partially.