S_RackDfComp Composites the Foreground over the Background while defocusing both layers by different amounts. The Foreground alpha channel is used as the matte. In the Sapphire Blur+Sharpen effects submenu. Inputs: Foreground:  The current layer.   The clip to use as foreground, and the alpha channel of this clip is used as the matte. Background:  Defaults to None.   The clip to use as background. Matte:  Defaults to None.   The alpha channel of this input specifies the opacities of the Foreground input. If this input is not provided, the alpha channel of the Foreground input is used instead. This input can be affected by the Invert Matte or Matte Use parameters.

Parameters:

Shape:   Popup menu,  Default: Circle.
Determines the shape of the simulated camera iris.

Circle:  round shape.

Hexagon:  six sided shape with a side facing up.

Hexagon R:  six sided shape rotated so a vertex faces up.

Octagon:  eight sided shape with a side facing up.

Octagon R:  eight sided shape rotated so a vertex faces up.

Defocus Foreground:   Default: 8,  Range: 0 or greater.
The amount to defocus the Foreground and its Matte.

Defocus Background:   Default: 0,  Range: 0 or greater.
The amount to defocus the Background.

Rel Height:   Default: 1,  Range: 0.01 or greater.
The relative height of the convolution shape. If it is not 1, circles become ellipses, etc.

Use Gamma:   Default: 2,  Range: 0.1 or greater.
Values above 1 cause highlights in the source clip to keep their brightness after the defocus is applied.

Matte Gamma:   Default: 1,  Range: 0.1 or greater.
The gamma value to use for the defocus of the Matte.

Subpixel:   Check-box,  Default: off.
Enables defocusing by subpixel amounts. Use this for smoother animation of defocus widths.

Comp Premult:   Check-box,  Default: on.
Disable this if you have provided a separate Matte input and the Foreground pixel values have not been pre-multiplied by this Matte.

Matte Use:   Popup menu,  Default: Alpha.
Determines how the Foreground or Matte input channels are used to make a monochrome matte.

Luma:  the luminance of the RGB channels is used.

Alpha:  only the Alpha channel is used.

Invert Matte:   Check-box,  Default: off.
If on, inverts the Matte input so the effect is applied to areas where the Matte is black instead of white. This has no effect unless the Matte input is provided.

Soft Borders:   Check-box,  Default: off.
If enabled, transparent borders are added to the input image before processing. This allows the result to include soft edges beyond the original image size. When off, the effect only occurs within the frame and the result will retain an edge at the borders. This parameter does not appear in FCP or DF because those applications don't support image expansion.

Opacity:   Popup menu,  Default: Normal.
Determines the method used for dealing with opacity/transparency.

All Opaque:  Use this option to render slightly faster when the input image is fully opaque with no transparency (alpha=1).

Normal:  Process opacity normally.

As Premult:  Process as if the image is already in premultiplied form (colors have been scaled by opacity). This option also renders slightly faster than Normal mode, but the results will also be in premultiplied form, which is sometimes less correct.

Show Fg Defocus: Check-box, Default: off.
Turns on or off the screen user interface for adjusting the Opacity parameter. Its value should first be made positive to adjust this more easily.This parameter only appears on AE and Premiere, where on-screen widgets are supported.

Show Bg Defocus: Check-box, Default: off.
Turns on or off the screen user interface for adjusting the Opacity parameter. Its value should first be made positive to adjust this more easily.This parameter only appears on AE and Premiere, where on-screen widgets are supported.

See Also:

RackDefocus DefocusPrism Blur Sapphire Plug-ins Introduction

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