Any digitally created or manipulated visual element—3D models, particles, textures, animation. From render farm output to final plate.
On set or in the edit, you encounter Computer Graphics wherever pixels, not physics, do the work. You immediately think of monsters or spaceships – but that's just the tip of the iceberg. Virtually every digital image that isn't live-action footage is created through a chain of rendering processes: 3D models are built, given textures and material properties, photographed (virtually) under lighting, and output. Particle effects like smoke, sparks, or blood? Computer Graphics. The specular highlight on a futuristic surface? Also. Even the subtle dirt on a lens in a sci-fi scene is digitally composited.
The work begins long before the final render. In the previs stage, VFX teams use low-poly 3D models to test camera movements, timing, and spatial logic – fast, dirty, functional. Only then follows detailed asset creation: modeling, rigging for animation, shading for realistic material surfaces. Lighting is crucial here – it must match the live-action lighting, otherwise your CG character will immediately look fake. Rendering itself is computational power; depending on complexity, a single frame can take hours or days. That's why there are render passes – Diffuse, Specular, Ambient Occlusion, Depth – which the compositor can later mix separately to maintain flexibility and avoid baking everything into a monolithic final render.
In compositing, CG merges with the live-action plate. Color grading, focus matching, motion blur, grain, lens distortion – everything must be synchronized. A common mistake: rendering too perfectly. Real cinema has flaws, imperfections, optical sins. Good computer graphics do *not* look like computer graphics because they imitate the imperfections of the optical process.
The pipeline is closely intertwined with motion capture, green screen keying, and tracking. Without stable camera tracks or clean roto, there are no convincing CG characters. Conversely, digital effects can save a flawed live-action plate – or subtly enhance it. Computer Graphics today is no longer just spectacle; it's an everyday tool for correction, enhancement, and subtle reality negotiation.