Eye, Ear & Mind Mesh - Convergence In 3D
Crucial to the 3D look of “Avatar” is the extensive use of the Fusion Camera System developed by Emmy-nominated cinematographer Vince Pace and Academy Award-winning director James Cameron. Originally called the Reality Camera, it was first deployed on Cameron’s underwater documentaries “Ghosts of the Abyss” (2003) and “Aliens of the Deep” (2005), which proved that Pace’s concept of combining two Sony HDC-950 HD cameras with lenses that could dynamically adjust the angle of their convergence to match the depth of objects in Z-space significantly reduced the eye strain associated with viewing previous 3D productions, while increasing the flexibility of manipulating an image’s perceived depth effect.Now upgraded with Sony HDC-F950 cameras, the Fusion Camera System was used on location in New Zealand throughout the live action sequences on “Avatar” by Mauro Fiore (2007’s “The Kingdom”). Pace, who is CEO of the digital camera system company, PACE, in Burbank, Calif, also served as second unit DP in New Zealand and as primary cinematographer on all the scenes shot in studio back in Los Angeles. Like James Cameron himself, Pace has been closely involved with all the post work on the film.
![]()
Paralyzed Marine Jake Sully (Sam Worthington) volunteers to exist as an Avatar on Pandora. “A key enhancement to our Fusion Camera System used on ‘Avatar’ has been our ability to introduce a software algorithm that controls the convergence so we can extract the best stereo from a shot based on metadata such as focal length and distance to the subject,” Pace explained.
“This patent-pending ‘Constant Convergence Algorithm’ then specifies variables such as the interocular distance between the lenses and their necessary convergence point, and when used in conjunction with an on-set convergence engineer, gave us a guide track for creating images in ‘Avatar’ that most closely emulate the way human eyes perceive depth. We want it to be a totally immersive 3D visual experience.”
But that 3D experience has taken almost three years to emerge from the edit bays at 20th Century Fox and also Cameron’s own Malibu home at the hands of post pros John Refoua (editor on 2007’s “Balls of Fury,” Cameron’s “Ghosts of the Abyss,” and many TV episodics) and Stephen Rivkin (three “Pirates of the Caribbean” features along with hits such as 2001’s “Ali” and “The Hurricane” in 1999). Refoua and Rivkin have worked closely with Cameron’s vision to take audiences on a 3D thrill ride to Pandora.
Easy access to viewing scenes in Z-space is vital as editors are still learning the grammar of 3D visual story telling.
“The 3D in ‘Avatar’ tends to be used to enhance the reality of the visual environment rather than as an effect in itself,” said Refoua. “We want the audience to feel they are actually standing in the scene they are watching. This also enabled us to use faster cuts in some of the action sequences because the audience’s eyes will not be overwhelmed with visual information.”

