Simulates a camera's depth of field, according to a Z depth input, by manipulating the focal length, near and far foci, strength
of the effect, radius of the circle of confusion, and range of Z values.
Requires an Input (RGBA) and a Z Depth input (A).
Produces an Output (RGBA).
Depth of Field
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Determines the focal length of the lens. A lens with a shorter focal length gives a greater depth of field than a lens with
a longer one.
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Defines the front (start) distance of the focus area.
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Defines the back (end) distance of the focus area.
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Controls how powerful the depth of field will be, given the defined focal distance.
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Controls the scaling factor of the circle of confusion (unfocused area).
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Defines the level of antialiasing to be performed.
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Controls the active range in which depth is calculated. A 2D image does not contain the same depth information as a 3D scene,
so the Z Values Range translates Near and Far Focus values into values that fit into the 2D image's 0 to 1 range. The default
value is appropriate for most cases.
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