Post production is a general term for what happens to images after their initial creation. In filmmaking, post production refers to adding computer graphics or other elements that are not part of the live film shoot. In computer graphics,post production refers to doing something with the rendered images outside the 3D program.
In practice, post production on rendered images can include:
- Layering rendered elements like highlights and shadows, and adjusting them separately
- Adding lens flares, volume lights, and other lighting effects
- Adjusting levels and correcting colors
Some post-production applications are not limited to working with rendered images only, and will accept 3D models or scenes directly.