RackDfComp Composites the Foreground over the Background using a Matte while defocusing both layers by different amounts. Inputs: Front:  The clip to use as foreground. Back:  The clip to use as background. Matte:  Specifies the opacities of the Front clip. Only the red channel of this input is used.

Parameters:

Defocus Front:   Default: 0.1,  Range: 0 or greater.
The amount to defocus the Foreground and its Matte. This parameter can be adjusted using the Fg Defocus Widget.

Defocus Back:   Default: 0,  Range: 0 or greater.
The amount to defocus the Background. This parameter can be adjusted using the Bg Defocus Widget.

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

Use Gamma:   Default: 1,  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.

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

Circle:  round.

3 sides:  triangle.

4 sides:  square.

5 sides:  pentagon.

6 sides:  hexagon.

7 sides:  etc.

Roundness:   Default: 0,  Range: any.
Modifies the shape of the simulated camera iris. A value of 1 produces a circle; 0 gives a flat-sided polygon with a number of sides given by the Shape parameter. Less than 0 causes the sides to squeeze inward giving a star shape, while a value greater than 1 causes the corners to squeeze inward, giving a flowery shape. Has no effect if the Shape is set to Circle.

Rotate:   Default: 0,  Range: any.
Rotates the iris shape.

Bokeh:   Default: 0,  Range: any.
Softens the outer edge of the iris shape, which gives a softer look to the defocused highlights. A negative value darkens the center of the iris shape, producing a ring-like defocus shape.

Boost Highlights:   Default: 0,  Range: 0 or greater.
The amount to increase the luma of the highlights in the source clip. Increase this parameter to blow out the highlights without affecting the darks or mid-tones.

Hilite Threshold:   Default: 0.9,  Range: 0 or greater.
The minimum luma value for highlights. Pixels brighter than this will be brightened according to the Boost Highlights parameter.

Comp Premult:   Check-box,  Default: off.
Enable this for a better composite if the Foreground pixel values have been pre-multiplied by the Matte pixel values. This is also known as an 'additive' composite.

Invert Matte:   Check-box,  Default: off.
If enabled, the black and white of the matte are inverted before use.

Edge Mode:   Popup menu,  Default: REFLECT.
Determines the behavior when accessing areas outside the source image.

BLACK:  Areas outside the source image are treated as black, which can produce dark areas around the edges of the image. Select this for fastest rendering.

REPEAT:  Repeats the last pixel outside the border of the image.

REFLECT:  Reflects the image outside the border.

Params2:

Lens Noise:   Default: 0,  Range: 0 or greater.
Increase to add noise to the iris shape, dirtying up the defocus a little. Can make the result more realistic. Turn up past 1 for a more stylistic result.

Noise Freq:   Default: 10,  Range: 0.01 or greater.
The frequency of the added noise. Ignored if Lens Noise is zero.

Noise Freq Rel X:   Default: 1,  Range: 0.01 or greater.
The relative horizontal frequency of the added iris noise. Increase to stretch it vertically or decrease to stretch it horizontally.

Noise Seed:   Default: 0.123,  Range: 0 or greater.
The seed value for the added noise. To make the noise appear different on each frame, animate this to be different on each frame. The actual value doesn't matter; only that it's different.

See Also:

RackDefocus DefocusPrism Blur Convolve ConvolveComp

Sapphire Plug-ins Introduction

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