The Oscar-winning visual-effects artist died at his home in Malibu, California, on June 15, aged 62.
His most recent work can be seen in summer blockbusters Iron Man and Indiana Jones and the Kingdom of the Crystal Skull.
Friends, relatives and show-business associates all gathered to pay their respects to Winston at a memorial service on Sunday in Los Angeles.
“He then workshopped those dreams with pencil, clay and later years on the computer. He would basically give life to all of our ideas. He would make them come to life.”
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