3D rendering glossary
3D animation: what it is, types, phases and applications
3D animation is the technique that creates moving images from digital three-dimensional models. Objects, characters or spaces are built in 3D software, their movements and those of the camera are defined over time, and the computer calculates each frame. It is used in film, advertising, video games, architecture and product.
How 3D animation works
Unlike 2D animation, where each frame is drawn, in 3D animation you work on a virtual scene with X, Y and Z coordinates. The animator does not draw images: they indicate where each element should be at specific moments and the program interpolates the movement between those points, called keyframes.
A video usually plays at 24, 25 or 30 frames per second. That means one minute of animation at 30 fps requires calculating 1,800 images. That is why rendering is the most demanding part of the process in machine time, and why planning ahead avoids repeating work.
In practice: Render Fabrik is a 3D architectural rendering studio working with clients in Brazil and Europe, with a quote within 24 hours.
Production phases of 3D animation
- Script and storyboard: you define what you want to tell, the duration, the order of shots and the tone.
- Modelling: building the geometry of buildings, furniture, products or characters.
- Texturing and materials: colour, gloss, roughness and relief, usually with PBR materials that react to light in a physical way.
- Rigging: in characters and mechanisms, a skeleton or control system is created that allows them to be moved.
- Animation: movements of camera, objects, people, vehicles, water or vegetation.
- Lighting: sunlight, artificial or studio light, which defines the atmosphere of each shot.
- Rendering: calculation of all frames with engines such as V-Ray, Corona, Arnold, Redshift or Unreal Engine.
- Post-production and editing: colour correction, effects, titles, music, voice and final edit.
Types of 3D animation
| Type | What it is | Common use |
|---|---|---|
| Keyframe animation | The animator sets positions and the software interpolates | Camera paths, products, mechanisms |
| Motion capture | The movement of real actors is recorded and applied to the model | Film, video games, realistic characters |
| Simulation | Calculated physics: fluids, cloth, smoke, particles | Visual effects, advertising |
| Real-time animation | It is generated instantly in a game engine | Video games, interactive experiences, virtual tours |
| 3D motion graphics | Typography and shapes animated with a graphic aesthetic | Brands, social media, presentations |
Applications of 3D animation
Architecture and property
In architecture, 3D animation takes the form of virtual tours or project videos. The camera moves through the facade, the entrance, the communal areas and the interior of the homes before the building exists. It allows you to show light at different times of day, the urban environment and the relationship between spaces, something a still image does not convey as well.
For property developers, 3D video is a central piece of off-plan marketing: it is used on the project website, on social media, in advertisements and in the sales office. For architecture studios, it serves to explain the concept in competitions and client meetings.
Product and industry
In product, 3D animation shows an object rotating, opening or being disassembled into parts. It is common in launches of household appliances, furniture, cosmetics or machinery, because it shows internal details and operation without the need to manufacture prototypes or set up a shoot.
Entertainment, training and medicine
Animated film and visual effects are the best-known use. It is also used in technical training, safety simulations, scientific communication and explanation of medical procedures.
Best practices and common mistakes
- Starting without a script: changing the camera path once the animation is already rendered forces entire shots to be recalculated.
- Camera too fast: in architecture, slow and stable movements convey quality; abrupt turns make viewers dizzy.
- Empty scenes: people, wind-blown vegetation and vehicles give scale and life to the space.
- Excessive duration: short pieces work for social media; the full project video usually goes on the website.
- Forgetting the final format: it is best to define from the start whether you need 16:9, vertical 9:16 or square, and the resolution (Full HD or 4K).
3D animation in a visualisation studio
In an architectural visualisation studio, 3D animation starts from the same model used for still images. This means the exterior 3D renders and the 3D video share materials, lighting and environment, and the campaign maintains a coherent aesthetic. When the client needs the buyer to explore on their own, the natural complement is a 360° virtual tour. You can see how we work for property developers and architects on our Spain page.
Frequently asked questions
What is the difference between 3D animation and 3D rendering?
A 3D render is a still image calculated from a model. 3D animation is a sequence of many renders, one per frame, which when played back creates the sensation of movement.
What software is used to create 3D animation?
The most common are Blender, 3ds Max, Maya and Cinema 4D for modelling and animating, and engines such as V-Ray, Corona, Redshift or Unreal Engine for rendering. In architecture, Lumion, Twinmotion and D5 Render are also used.
How long does an architectural 3D animation video last?
It depends on the use. Pieces for social media tend to be short, just a few seconds, while the presentation video for a residential project usually lasts between one and three minutes.
What do you need to commission a 3D animation of a project?
Plans or a 3D model of the project, definition of materials and finishes, style references and an idea of the route you want to show. With this information the studio prepares the storyboard before animating.