The Visibility group establishes a range where particles are visible. Distances are defined by how close or far away the particles are from the camera. It can be used to fade out distant or near particles. The units for these values are determined by After Effects' camera settings.
At left, the Visibility group. At right, a diagram of how Visibility works in Form.
Far Vanish: The far distance from the camera when particles become completely invisible. Low values mean the particles are farther away and become invisible. High values mean the particles are closer and stay visible.
Left to right, Far Vanish set low and high.
Far Start Fade: The far distance from the camera when particles start to fade out. Low values make the fade apply itself. High values keep the fade from happening.
Left to right, Far Start Fade set low and high.
Near Start Fade: The near distance from the camera when particles start to fade out. Low values keep the fade from happening. High values make the fade apply itself. (The opposite of the Far Start Fade parameter.)
Left to right, Near Start Fade set low and high.
Near Vanish: The near distance from the camera when particles become completely invisible. Low values mean the particles are closer and stay visible. High values mean the particles are farther away and become invisible. (The opposite of the Far Vanish parameter.)
Left to right, Near Vanish set low and high.
Near and Far Curves: The curve used to fade particles in the Near and Far Fade zones. The curve can be Linear or Smooth interpolation. With Smooth, the visibility for the form will fade less gradually than with the Linear option.
