Production and post-production are stages in the filmmaking process.
Production refers to the pre-editing process of creating a film, including the writing, planning, shooting and recording of footage. This stage involves the collaboration of multiple departments, including the director, producer, actors, camera crew, sound technicians, and special effects artists.
Post-production, on the other hand, is the process that takes place after filming has wrapped and involves editing, sound design, visual effects, color correction, and scoring. The goal of post-production is to turn raw footage into a finished film that is ready for distribution.
In post-production, the editor works to cut the footage together into a cohesive story, while sound designers add sound effects, music and dialogue to create a more immersive experience. Visual effects artists use computer-generated imagery (CGI) to enhance or alter the images captured during filming, while color correction is used to balance the colors and lighting in the footage. Finally, a score or soundtrack is added to complete the film.
Source: The Filmmaker's Handbook: A Comprehensive Guide for the Digital Age by Steven Ascher and Edward Pincus.
In conclusion, production and post-production are critical stages in the creation of a film, with production focused on capturing raw footage, and post-production focused on transforming that footage into a polished, finished product.