Specific Types of Previs
 

"Previs is a collaborative process that generates preliminary versions of shots or sequences, predominantly using 3D animation tools and a virtual environment. It enables filmmakers to visually explore creative ideas, plan technical solutions, and communicate a shared vision for efficient production." *

A number of sub-types of previs* exist in current practice, including:

Pitchvis illustrates the potential of a project before it has been fully funded or greenlit. As part of development, these sequences are conceptual, to be refined or replaced during pre-production.

D-Vis (Design Visualization) utilizes a virtual framework in pre-production that allows for early in-depth design collaboration between the filmmakers. Before shots are developed, d-vis provides a preliminary, accurate virtual design space within which production requirements can be tested, and locations can be scouted. Approved design assets are created and made available to other previs processes.

Technical Previs incorporates and generates accurate camera, lighting, design and scene layout information to help define production requirements. This often takes the form of dimensional diagrams that illustrate how particular shots can be accomplished, using real-world terms and measurements.

On-Set Previs creates real-time (or near real-time) visualizations on location to help the director, cinematographer, visual effects supervisor, and crew quickly evaluate captured imagery. This includes the use of techniques that can synchronize and composite live photography with 2D or 3D virtual elements for immediate visual feedback.

Postvis combines digital elements and production photography to validate footage selection, provide placeholder shots for editorial, and refine effects design. Edits incorporating postvis sequences are often shown to test audiences for feedback, and to producers and visual effects vendors for planning and budgeting.

*All definitions formulated by the ASC-ADG-VES Joint Technology Subcommittee on Previsualization.

Click on the links above to be taken to each sub-type's discussion forum. We would like to encourage all members to participate in discussion on these topics.