<P> Due to the intricate designs of the Transformers, even the simplest motion of turning a wrist needs 17 visible parts; each of Ironhide's guns are made of ten thousand parts . Bumblebee uses a piece below his face - plate as an eyebrow, pieces in his cheeks swivel to resemble a smile, and all the characters' eyes are designed to dilate and brighten . According to Bay, "The visual effects were so complex it took a staggering 38 hours for ILM to render just one frame of movement"; that meant ILM had to increase their processing facilities . Each rendered piece had to look like real metal, shiny or dull . This was difficult to model because the aged and scarred robots had to transform from clean cars . Close - up shots of the robots were sped up to look "cool", but in wide shots the animation was slowed down to convincingly illustrate a sense of weight . Photographs were taken of each set . These were used as a reference for the lighting environment, which was reproduced within a computer, so the robots would look like they were convincingly moving there . Bay, who has directed numerous car commercials, understood ray tracing was the key to making the robots look real; the CG models would look realistic based on how much of the environment was reflecting on their bodies . Numerous simulations were programmed into the robots, so the animators could focus on animating the particular areas needed for a convincing performance . </P> <P> Composer Steve Jablonsky, who collaborated with Bay on The Island, scored music for the trailers before work began on the film itself . Recording took place in April 2007, at the Sony Scoring Stage in Culver City, California . The score, including the teaser music, uses six major themes across ninety minutes of music . The Autobots have three themes, one named "Optimus" to represent the wisdom and compassion of the Autobot leader, and another played during their arrival on Earth . The Decepticons have a chanted theme which relies on electronics, unlike most of the score . The AllSpark also has its own theme . Hans Zimmer, Jablonsky's mentor, also helped to compose the score . </P> <P> Transformers had its worldwide premiere at N Seoul Tower on June 10, 2007 . The film's June 27 premiere at the Los Angeles Film Festival used a live digital satellite feed to project the film on to a screen . A premiere took place at Rhode Island on June 28, which was a freely available event giving attendees the opportunity to buy tickets for $75 to benefit four charities: the Rhode Island Community Food Bank, the Autism Project of Rhode Island, Adoption Rhode Island, and Hasbro Children's Hospital . The film was released in IMAX on September 21, 2007, with additional footage that had not been included in the general theatrical release . </P> <P> Hasbro's toy line for the film was created over two months in late 2005 and early 2006, in heavy collaboration with the filmmakers . Protoform Optimus Prime and Starscream were released in the United States on May 1, 2007, and the first wave of figures was released on June 2 . The line featured characters not in the film, including Arcee . A second wave, titled "AllSpark Power", was set for release late 2007, which consisted of repaints and robotic versions of ordinary vehicles in the film . The toys feature "Automorph Technology", where moving parts of the toy allow other parts to shift automatically . Merchandise for the film earned Hasbro $480 million in 2007 . </P>

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