Which role focuses on changing images or creating special effects during the post-production process?

The role that focuses on changing images or creating special effects during the post-production process is the Visual Effects position. This role is essential in enhancing the overall storytelling and visual experience of a film or video by manipulating imagery to create effects that cannot be achieved through traditional filming techniques. Visual Effects artists use computer-generated imagery (CGI), digital compositing, and animation to integrate these effects seamlessly into the live-action footage, thus helping to create a more immersive viewing experience.

While the Film Editor also plays a crucial role in the post-production process by organizing and assembling footage, their primary focus is on the narrative and pacing of the film rather than the creation of visual effects. The Sound Designer works on the audio elements, which, while vital to the overall production, does not involve manipulating images or effects. Lastly, the Location Manager is responsible for finding and managing filming locations, which relates to pre-production and the logistics of the shoot rather than post-production effects work.