To adjust the horizontal position or key source width for a luminance key, linear key, or chroma key: Press [Key Position], turning it on, and set the parameters.

Knob

Parameter

Adjustment

Setting values

 

 

 

 

1

H Phase

Key horizontal position

−4.00 to +4.00

 

 

 

 

2

Left

Key left edge position

−4.00 to +4.00

 

 

 

 

3

Right

Key right edge position

−4.00 to +4.00

 

 

 

 

To set the key priority: Press [Key Priority] or select VF7 ‘Misc’ and HF3 ‘Key Priority’ to access the Key Priority menu.

For details, see “Setting the Key Priority by a Menu Operation” (page 181).

Chroma Key Composition

There are two types of composition for chroma keying: normal mix, and additive mix.

To carry out chroma key composition, use the following procedure.

For an overview of the chroma key composition, see page 37.

1 In the M/E-1>Key1 menu, select HF1 ‘Type.’ 2 Select [Chroma] in the <Key Type> group.

It becomes possible to adjust the key density (see page 202).

3 Select [Chroma Adjust].

The Chroma Adjust menu appears.

4 Carry out auto chroma key adjustments.

Also carry out manual adjustments if necessary to obtain an optimum chroma key image.

For the adjustment procedures, see page 204.

5 In the <Mix Mode> group, select [Normal Mix] or [Additive Mix] depending on the desired type of chroma key composition.

When using an additive mix for chroma keying, the (typically blue) background parts of the foreground video must be converted to black. For this, use the color cancel function (see page 205).

Keys 4 Chapter

Key Setting Operations Using Menus 203