User Manual

Phase
(Polylines and meshes only) Animating this can be used to move the ripple of a polyline or mesh
along itself, from end to end. The effect can be most clearly seen when Speed is set to 0.0.
Random Seed Randomize
The Random Seed is used to “seed” the amount of jitter applied by the modifier. Two Perturb
modifiers with identical settings, but different random seeds, produce two completely different
results. Click the Randomize button to assign a random seed value.
Strength
Use this control to adjust the strength of the Perturb modifier’s output, or its maximum variation
from the primary value specified above.
Wobble
Use the Wobble control to determine how smooth the resulting values are. Less wobble implies
a smoother transition between values, while more wobble produces less predictable results.
Speed
Increasing the Speed slider value speeds up the rate at which the value changes. This can
increase the apparent wobbliness in a more predictable fashion than the Wobble control and
make the jitter more frantic or languorous in nature.
Probe
The Probe modifier is one of the most versatile modifiers in Fusion. It allows you to control any
numeric parameter by the color or luminosity of a specific pixel or rectangular region of an
image. Think of driving the Brightness node by probing the pixel values of flickering lights in a
shot, or measuring graded LUTs to compare values.
It can be applied by right-clicking a parameter and selecting Modify With > Probe.
Inspector
Controls Tab
The Controls tab for the Probe modifier allows you to select the node to probe, define the
channel used to drive the parameter, and control the size of the probed area.
Image to Probe
Drag a node from the Node Editor to populate this field and identify the image to probe.
Chapter – 111 Modifiers 2533