Concerto for the Earth  (1992)

The original name for "Concert for the Earth" was "La Concerto Por La Tierra", since it was shown publicly for the first time at Expo '92 in Spain. The beamsplitter rig designed and built by Steve Hines was the only one available at that time that was capable of steadily supporting the two cameras and 1,200 ft. 65mm magazines operating at 60 fps. Ed DiGiulio designed and built the pair of special high speed Cinema Products CP65 cameras to the specifications of Doug Trumbull. John Rupkalvis and Noel Archembeault were stereographers. This was the first stereoscopic 3D movie with a time parallax shot, which was designed by John Rupkalvis. The effect was achieved using two work prints, a light table, a registration pin bar, a splicer, splicing tape, and for temporary hold down, Scotch tape. The dual Showscan projectors also operated at 60 fps, and were based on Philips Norelco (now Kinotone) movements. Synchro Selsyn motors locked sync on the projectors. Extra long leaders on the film print were required for the extra time needed to get up to speed and lock sync.