Visual Effects 3D CGI and Rendering 3

Question 1

What does 'photogrammetry' mean in VFX asset production?

Accepted Answer

Reconstructing a 3D model from multiple photographs of a real-world object

Answer

Measuring distances on a photographic set

Answer

Generating photo-realistic texture maps procedurally

Answer

Taking reference photos for a matte painting

Question 2

What is the purpose of a 'normal map' in VFX and game rendering?

Accepted Answer

A texture that stores surface orientation data to simulate fine detail in lighting without extra geometry

Answer

A map showing the normal (average) lighting conditions on set

Answer

A control that normalizes the brightness of a render

Answer

A reference sheet with standard camera settings

Question 3

What is 'hair simulation' technology in VFX used for?

Accepted Answer

Simulating the dynamics of individual hair or fur strands responding to gravity, wind, and collisions

Answer

Styling wigs for on-set actors

Answer

Creating motion trails behind fast-moving objects

Answer

Generating fiber-like noise textures for rough surfaces

Question 4

What is 'PBR' (Physically Based Rendering) in modern VFX and game pipelines?

Accepted Answer

A rendering approach where material properties are based on real-world physical values for consistent results

Answer

A post-build rendering pass run after main compositing

Answer

A proprietary rendering engine by Pixar

Answer

A process for rendering particle-based effects

Question 5

What is a 'proxy' in a 3D VFX workflow?

Accepted Answer

A lower-resolution stand-in version of an asset used during animation and previsualization

Answer

A legal representative for a VFX studio on set

Answer

A network proxy server used to secure the render farm

Answer

A placeholder null object in the scene hierarchy

Question 6

What is 'scene assembly' or 'layout' in a VFX pipeline?

Accepted Answer

The process of placing 3D assets, cameras, and lights into the correct positions within a scene

Answer

Assembling the physical film set on location

Answer

Assembling render passes in the compositing software

Answer

Organizing files in the project's folder structure