Sony MKS-2017 User Manual

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108

Advanced Key Operations

To adjust the window, the Clip, Gain, Hue must be 
adjusted to appropriate values. Set these to appropriate 
values first, and then proceed as follows.

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

Set the following parameters with the knobs.

a) See above figure.

In normal chroma keying, the key signal is based on the 
chrominance component only, and all elements of the 
foreground with the same hue are replaced by the 
background. Using the Y balance function, you can specify 
a luminance level range within which the key is active, and 
replace the specified part by the background.
You can use the Y balance function independently on the 
key signal for the composition and the key signal for the 
color cancel function. When applied to the key signal for 
the composition, this produces the foreground with the 
color cancel effect applied. This can therefore be used to 
provide an impression of smoke, for example.

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

Set the following parameters with the knobs.

This function provides a more realistic treatment when the 
shadow of an object in the field of view falls on the blue 
background. Since parts of the blue background darker 
than a specified intensity are treated as shadows, there is 
no effect on cutting out of the foreground.

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

Set the following parameters with the knobs.

When chroma key shadowing is on, key edges are normal 
with soft edges off.

You can vary the gain and hue of chroma key foreground 
video. Gain can be adjusted for the overall video signal, or 
individually for Y and C.

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

Adjust the following parameters with the knobs.

1 (Crop)

Crop value 

a)

100.00 to 0.00

2 (Angle)

Angle value 

a)

180.00 to 0.00

1 (Clip)

Reference level of 
color cancel key

0.00 to 100.00

Crop

 a)

Angle

 a)

Reference color hue

Range of colors 
remaining as 
foreground

Range of colors creating the 
key signal (to be replaced by 
background signal)

a) The Crop and Angle values do not change even if you 

use the auto chroma key function.

2 (Gain)

Key gain

–100.00 to +100.00

3 (Lum)

Luminance

0.00 to 100.00

1 (Lum)

Reference 
luminance of 
shadow

0.00 to 100.00

2 (Gain)

Gain of shadow 
key 

–100.00 to +100.00

3 (Density)

Density of shadow  0.00 to 100.00

4 (Soft)

Softness of 
shadow

0.00 to 100.00

1 (Video Gain)

Overall gain of 
video signal

–100.00 to +100.00

2 (Y Gain)

Gain of Y signal 

–100.00 to +100.00

3 (C Gain)

Gain of C signal

–100.00 to +100.00

4 (Hue Offset)

Amount of hue 
offset

–180.00 to +180.00