Apple Motion 4 - Manual (Page 970)

Soft Focus
This filter creates an effect that’s similar to duplicating an object, using the Screen blend
mode to composite it against itself, and then blurring one of the overlapping objects.
The advantage of this filter is that you can do this all within a single filter. The Strength
parameter controls how much of the blurred image is added back to the original image,
while other sliders let you control the overall, horizontal, and vertical amount of blur.
Original image Soft Focus applied
Parameters in the Inspector
Amount: Sets the radius of the blur.
Strength: Sets the amount of opacity of the blurred composite.
Horizontal: Sets the percentage of the maximum horizontal blur.
Vertical: Sets the percentage of the maximum vertical blur.
Crop: Sets whether or not the object is cropped at its original boundaries.
Mix: Sets what percentage of the original image is blended with the blurred image.
HUD Controls
The HUD contains the following controls: Amount and Strength.
Variable Blur
A blur that can either include or exclude a circular region, to create a sort of tunnel focus
effect. If the inner radius of the circle is larger than the outer radius of the circle, the blur
is applied outside of the circle. Otherwise, the blur is applied to the area within the circle.
970 Chapter 16 Using Filters