Visual effects

Visual Effects in Post-Production

  • Visual effects (VFX) refers to techniques used to create or manipulate images outside the context of live action shots in filmmaking.
  • While Special effects (SFX) are often produced on set, such as Practical effects, VFX are added in post-production.
  • Important to remember that VFX are not just about spectacle, but should serve the story and characters.

Types of Visual Effects

  • CGI (Computer-Generated Imagery): Uses computer software to create 3D models, simulate landscapes, create animation or any other elements that couldn’t be shot in a practical manner.
  • Compositing: Merging several layers of images into one final image. This can be used to add elements, remove elements, or even combine shots filmed at different times or locations.
  • Motion Capture: Allows real-life movement to be translated into digital characters. Actors wearing sensors have their movements recorded and translated into computer models.
  • Green Screen (Chroma Keying): Allows for the removal of a colour (usually bright green or blue) in post-production, and its replacement with another image or video.

Integrating Visual Effects

  • Give due consideration to how practical effects (created on set) and computer-generated images will interact. This requires careful planning.
  • Keep in mind the movement, lighting, and perspective when embedding a CGI element into live-action footage.
  • Consistency is key - both the live action and VFX components must appear to inhabit the same world.

Ethical Considerations

  • It is essential to use VFX responsibly and acknowledge their impact: it can assist in storytelling but might also be misleading or manipulative.
  • Filmmakers have an ethical obligation not to mislead, harm or exploit their audience.
  • Think about the potential implications and real-world effects of the images you create.

Remember, the aim of VFX is not to create flashy images for the sake of spectacle, but to service the story and help the audience to deeper understand and connect with the narrative.