Specific to your query, "HDRi" (High Dynamic Range imaging) is often referenced in professional VFX workflows for this film. Lighting artists at Digital Domain used HDRi to capture the actual lighting on set, which allowed them to light Benjamin’s digital head to match the live-action environment perfectly. Core Film Information David Fincher
"The Curious Case of Benjamin Button" has had a lasting impact on popular culture, and its influence can still be seen in many areas of modern storytelling. The film's exploration of non-linear narrative structures and unconventional characters has inspired a new generation of filmmakers to push the boundaries of what is possible on screen.
Beyond the use of HDRi, the production utilized several other "cutting-edge" technologies for 2008:
: Benjamin Button is born in 1918 with the physical appearance of an 80-year-old man and begins to age in reverse.