Sony MKS-2010 User Manual

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106

Advanced Key Operations

4H Mode: Set the maximum width to 4 (4 lines). Key 

fill and key source drop down by 4 lines.

8H Mode: Set the maximum width to 8 (8 lines). Key 

fill and key source drop down by 8 lines.

Proceed as follows to make fine adjustments to the chroma 
key image obtained with auto chroma key (see page 81).

From the top menu, select Key >M/E Key1 >Chroma 
Key.

The Chroma Key menu appears.

Press [Mix Mode].

A popup window appears.

Select one of the following.

Normal Mix: The background is cut out with the key 

signal, and then combined with the foreground, 
which has also been cut out with the key signal.

Additive Mix: The background, which has been cut 

out with the key signal, is combined with the 
unshaped foreground. This is effective for a 
natural looking composite when the scene 
includes glass or other translucent objects.

In an additive mix, the foreground is not shaped by the key 
signal, and variations in the (blue) background appear in 
the composite image. To prevent this, it is possible to set a 
particular luminance level for the background, and 

forcibly cut any parts below this level. This is called the 
plane function.
The plane function is enabled when additive mix is 
selected.

In the Key >M/E Key1 >Chroma Key menu, press 
[Plane], turning it on.

Set the following parameter with knob 1.

Methods of adjusting the composite obtained from chroma 
keying include automatic adjustment with the auto chroma 
key function, and manual adjustment carrying out the 
necessary processing separately. The optimum results will 
be obtained by first carrying out adjustments with the auto 
chroma key function, then making fine adjustments as 
required.
The following manual adjustments are possible.
• Key active
• Color cancel
• Window
• Y  balance
• Chroma key shadow
• Video signal adjustment

When the key active function is on, the composite video is 
output and you can adjust the composition method 
manually while viewing the monitor.
When the key active function is off, only the foreground is 
output. You should turn key active off when making 
manual adjustments with color cancel (see the next 
section).

In the Key >M/E Key1 >Chroma Key menu, turn [Key 
Active] on.

Set the following parameters with the knobs.

a) Set to 1 for through processing, with no filter applied. The filter 

becomes stronger as larger numbers are specified

1 (Lum)

Luminance level

0.00 to 100.00 

1 (Clip)

Chroma key 
reference level

0.00 to 100.00

2 (Gain)

Key gain

–100.00 to +100.00

3 (Hue)

Hue

359.99 to 0.00

4 (Density)

Key density

0.00 to 100.00

5 (Filter)

Filter coefficient

1 to 9

 a)