Adobe After Effects Adobe After Effect 4 — Questions and Answers
Question 1: Which expression returns the current time of the composition in seconds?
- time (Correct answer)
- frame
- value
- index
Correct answer: time
The 'time' expression evaluates to the current composition time in seconds.
Question 2: What is the purpose of the wiggle() expression?
- Add random oscillating motion to a property (Correct answer)
- Loop a keyframe set
- Snap to whole values
- Reverse animation
Correct answer: Add random oscillating motion to a property
wiggle() generates pseudo-random movement based on frequency and amplitude.
Question 3: Which tool is used to draw a mask directly on a layer?
- Pen tool (Correct answer)
- Hand tool
- Pan Behind tool
- Zoom tool
Correct answer: Pen tool
The Pen tool creates mask paths by placing vertices on a layer.
Question 4: What does the Roto Brush tool help you accomplish?
- Separate a foreground subject from its background (Correct answer)
- Add color grading
- Generate audio waveforms
- Create text animations
Correct answer: Separate a foreground subject from its background
The Roto Brush isolates a moving subject from the background across frames.
Question 5: Which interpolation type creates sharp, instant changes between keyframe values?
- Hold (Correct answer)
- Bezier
- Linear
- Ease
Correct answer: Hold
Hold interpolation keeps a value constant until the next keyframe, producing a sudden jump.
Question 6: What is the 3D camera tracker primarily used for?
- Analyze footage to insert elements that match camera movement (Correct answer)
- Stabilize shaky audio
- Recolor footage
- Compress video files
Correct answer: Analyze footage to insert elements that match camera movement
The 3D camera tracker reconstructs camera motion so new elements can be integrated realistically.
Question 7: Which panel shows real-time pixel and color values under the cursor?
- Info panel (Correct answer)
- Render Queue
- Effects & Presets panel
- Align panel
Correct answer: Info panel
The Info panel reports color, alpha, and coordinate values at the pointer.
Adobe After Effects Adobe After Effect 4
Which expression returns the current time of the composition in seconds?