Sony MLS-X1 Users Guide - Page 122

Y balance In a chroma key, the key signal is created based on the chrominance component only, and all elements of the foreground with the same hue are replaced by the background. When the Y balance function is enabled, you can specify only those portions of a particular luminance that will be replaced by the background, even if the hue is the same. When applied to the key signal for chroma key composition, this produces a foreground with color cancel applied state. This can be used to provide an impression of smoke. When applied to the color cancel key, the corresponding part is visible in its original color without being removed, and therefore it is possible to combine colors which are the same color as the background (blue background, for example) in the foreground. Shadow When the shadow function is enabled, the shadow of the subject projected on the background (blue background, for example) from the foreground appears more natural. Since the parts of the blue background darker than a specified intensity are treated as shadows, there is no effect on cutting out of the foreground. Foreground color correction You can adjust the hue of the foreground and the gain of the video signal/luminance signal/chrominance signal. Setting a Chroma Key This section describes the M/E-1 key 1 menu as an example. Composing an image by chroma keying 1 Open the Home > M/E-1 > Key1 > Type > Chroma Adjust menu (11101.12). 2 Execute an auto chroma key. Adjust the chroma key manually as required. For details, see "Chroma key adjustments" (page 121). 3 In the [Mix Mode] group, select a chroma key composition method. Normal Mix: Normal mix Additive Mix: Additive mix Setting the plane function Note When the chroma key composition method is a normal mix, the plane function cannot be set. 1 Open the Home > M/E-1 > Key1 > Type > Chroma Adjust menu (11101.12). 2 Set the [Plane] button to the on state and set the following parameter. No. Parameter 1 Luminance Adjustment Luminance To disable the plane function, set the [Plane] button to the off state. Adjusting a Chroma Key (Menu) This section describes the M/E-1 key 1 menu as an example. Executing an auto chroma key You can execute an auto chroma key based on the color specified by a sample mark. Note When using a sample mark for other keys, the sample mark cannot be enabled. 1 Open the Home > M/E-1 > Key1 > Type > Chroma Adjust menu (11101.12). 2 Set the [Sample Mark] button in the [Auto] group to the on state and set the reference color using the following parameters. No. Parameter 1 Position H 2 Position V 3 Size Adjustment Horizontal position Vertical position Size 3 Press the [Auto Start] button in the [Auto] group. The auto chroma key is executed. Adjusting key active 1 Open the Home > M/E-1 > Key1 > Type > Chroma Adjust menu (11101.12). 122