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The Speed Options group lets you adjust the quality/speed tradeoff of this plugin.
— Quality: Three options, Full, Half (Faster), and Quarter (Fast), let you choose a suitable tradeoff between image quality and plugin performance.
— Blur Alpha: Check this box to blur the Alpha channel along with the image’s content.
— Horizontal and Vertical Crop: Crops the External Input shape image being used to influence the bokeh to a smaller size, in the event the large size of the graphic is slowing things down and you can crop out extra black from the edges. You won’t notice a change to the result until you start cropping into the white part of the shape.
Controls
The parameters available from the Controls group change depending on the Shape Type you’ve selected.
— Blur Size/Scale: Adjusts the overall amount of blur. At higher values, the shape of bokeh can be more clearly seen.
— Blade Curvature: (Only available with Real and Creative Apertures) Lets you round off the edges of the Aperture Shape you selected.
— Rotation: Lets you adjust the angle the shape appears at.
— Anamorphism: Lets you adjust the aspect ratio of this effect in order to match the lens blur created by anamorphic lenses.
— Chroma Shift: Lets you simulate chromatic aberration within the blur effect.
— Highlights: Lets you adjust how the highlights of the image affect the blur, dilating or eroding the image more or less depending on how high Smooth Strength is.
— Apodization: (Only available with Real and Creative Apertures) A slider that lets you adjust the simulated “Airy disk” pattern in the defocused effect being generated. Dragging the slider to the left toward negative values accentuate concentric rings around the bokeh pattern that simulate the effects of optical diffraction and add a pattern to the result, while dragging this slider to the right introduces positive values that gradually filter the edges of the simulated bokeh pattern, resulting in a progressively smoother result.
— Catadioptric: (Only available with Real and Creative Apertures) A slider that lets you simulate the effect of a shaped mirror element in a Catadioptric telescope to “improve” focus within the defocused bokeh effect this plugin produces. At higher and higher values, the underlying image becomes progressively less blurry, while still being distorted by the bokeh shape being used which results in soft image overlays, creating a very different kind of simulated optical defocusing effect.