Adobe After Effects Visual Effects and Compositing 2

Question 1

What is the purpose of the 'Set Matte' effect in After Effects?

Accepted Answer

Uses the channel of another layer as a transparency matte for the target layer

Answer

Set Matte lets you specify any layer in the comp as a matte source, giving more flexibility than Track Mattes.

Question 2

What does 'Alpha Inverted Matte' do in the Track Matte options?

Accepted Answer

Uses the inverse of the matte layer's alpha channel to define transparency

Answer

Alpha Inverted Matte makes the layer visible where the matte layer is transparent and invisible where the matte is opaque.

Question 3

Which render order principle means effects are applied BEFORE transformations in After Effects?

Accepted Answer

Effects process before the layer's Transform properties are applied

Answer

In After Effects, effects are applied to the layer source first, and then the layer's transform properties (position, scale, rotation) are applied.

Question 4

What does the 'CC Composite' effect do when combined with other effects in After Effects?

Accepted Answer

Composites the original (pre-effect) layer with the post-effect result using a blend mode

Answer

CC Composite blends the original source of the layer with its effected version using any blending mode.

Question 5

In After Effects, what is 'motion blur' simulating?

Accepted Answer

The blur caused by fast-moving objects during a camera's shutter open time

Answer

Motion blur replicates the smearing captured on film or sensor when an object moves faster than the camera's shutter speed.

Adobe After Effects Practice Test