S_RackDefocus Generates a defocused version of the source clip using a 'circle of confusion' convolution. This effect is often preferable to a gaussian blur for simulating a real defocused camera lens, because bright spots can be defocused into clean shapes instead of being smoothed away. The Use Gamma parameter can adjust the relative brightness of the blurred highlights. In the Sapphire Blur+Sharpen effects submenu. Inputs: Source:  The current layer.   The clip to be processed.

Parameters:

Mode:   Popup menu,  Default: Defocus Color.
Selects between full color or monochrome defocus.

Defocus Color:  defocuses all channels of the source input.

Defocus Mono:  makes the source monochrome and then applies the defocus (faster).

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 Width:   Default: 8,  Range: 0 or greater.
The width of the defocus. Large values of this parameter are clamped internally if necessary so the width is never greater than the entire size of the image in either dimension.

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.

Gauss Blur:   Default: 0,  Range: 0 or greater.
If positive, a gaussian blur is also applied which can smooth out the edges of the shapes. This might also darken the highlights because Gamma is not considered in the gaussian blur.

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.

Brightness:   Default: 1,  Range: 0 or greater.
Scales the brightness of the result.

Offset Darks:   Default: 0,  Range: -8 to 2.
Adds this gray value to the darker regions of the result. This can be negative to increase contrast.

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

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 Defocus Width: Check-box, Default: off.
Turns on or off the screen user interface for adjusting the Opacity parameter.This parameter only appears on AE and Premiere, where on-screen widgets are supported.

See Also:

DefocusPrism

RackDfComp Blur BlurChannels BlurChroma Sapphire Plug-ins Introduction

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