demobook

After Effects: Animate cinematic focus blurs

Demo summary

The creator demonstrates adding rectangle masks to an adjustment layer and using a wiggle expression on the maximum blur value to simulate a flickering cinematic focus.

Step-by-step

  1. Add an adjustment layer over your footage
  2. Apply a Compound Blur effect to the adjustment layer
  3. Add a rectangle mask to the adjustment layer to define focus areas
  4. Feather the mask edges
  5. Alt-click the stopwatch for the Maximum Blur property
  6. Enter a wiggle expression to animate the blur intensity

Options

  • Keyframe the mask paths to animate the focus area movement

Watch out for

  • You must feather the masks to avoid harsh edges between focus zones

Tips

  • Use a wiggle expression on the maximum blur to achieve a soft flickering cinematic look

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