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
- Add an adjustment layer over your footage
- Apply a Compound Blur effect to the adjustment layer
- Add a rectangle mask to the adjustment layer to define focus areas
- Feather the mask edges
- Alt-click the stopwatch for the Maximum Blur property
- 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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