There is no publicly available evidence or credible reports indicating that the crew of Avatar 3 used actual lava for lighting reference during filming or production. The making of the Avatar sequels, including Avatar 3 (officially titled Avatar: Fire and Ash), is known for its groundbreaking use of advanced technology, particularly in performance capture and underwater filming, but no sources mention the use of real lava as a lighting reference or practical effect on set.
James Cameron and his team have pushed the boundaries of visual effects and motion capture technology, especially with the challenges of filming underwater scenes and creating highly realistic CGI environments. The production involved extensive use of virtual production techniques, motion capture, and computer-generated imagery to create the alien world of Pandora and its unique environments. Lighting in these films is typically simulated digitally to achieve the desired atmospheric effects, including the glow and heat of lava or other natural phenomena, rather than relying on actual physical sources like molten lava.
Given the extreme dangers and impracticalities of using real lava on a film set, especially for lighting reference, it is far more plausible that the filmmakers used digital simulations, controlled lighting rigs, and reference footage or images of lava to guide the visual effects artists. This approach allows for precise control over the lighting and visual mood without risking safety or logistical complications.
In summary, while Avatar 3 is notable for its technological innovations and immersive visual effects, there is no indication that the crew used actual lava for lighting reference. Instead, the film relies on cutting-edge CGI and virtual production methods to create the vivid and dynamic environments seen in the movie.
