Previsualization, often abbreviated as previs, is the process of planning and visualizing scenes before full-scale production begins, especially in film, animation, and visual effects. It involves creating rough versions of shots or sequences—usually using 3D models, simple animations, or storyboards—to help directors, cinematographers, animators, and other team members understand how a scene will look and function.

In the early days of the film industry, directors and storyboard artists typically relied on static images resembling comic strips to design storyboards. With the advancement of computer graphics technology and the support of 3D software, professionals were able to conduct detailed simulations of object movements and special effects within scenes, thereby obtaining precise visual previews. This allowed for necessary adjustments to be made in advance, thus preventing the waste of resources and shooting time during formal production.

This is particularly significant in the field of 3D animation, which is entirely computer-generated. It could be argued that the sole distinction between a refined 3D Previs and a final product lies in the rendering process. By continuously refining the Previs, animation directors can make informed decisions regarding the final output quality of the animation during the early stages of the project and address any deficiencies in a timely manner.

In (3D) Animation

In animation, previs helps plan:

• Character performance and choreography
• Shot continuity
• Visual flow of scenes
• Integration of complex camera moves or effects

After Previsualization (Previs) gained increasing popularity in the film industry, the scope and complexity of the information it encompasses have also expanded significantly. Nowadays, it is feasible to simulate virtually every aspect of a live-set environment within Previs, including camera movement angles, object destruction effects, explosion dynamics, and more. This advancement has substantially minimized the likelihood of rework in film and animation production while establishing new standards for industrial workflows.