disagreed with having a clear glass separation between Spock and Kirk during the death scene; he instead wanted a translucent divider allowing viewers to see only Spock's silhouette, but his objection was overruled. During Spock's funeral sequence Meyer wanted the camera to track the torpedo that served as Spock's coffin as it was placed in a long trough and slid into the launcher. The camera crew thought the entire set would have to be rebuilt to accommodate the shot, but Sallin suggested putting a dolly into the trough and controlling it from above with an offset arm. Scott's rendition of "Amazing Grace" on the bagpipes was James Doohan's idea. Spock's death in the film was widely reported during production. "Trekkies" wrote letters to protest, one paid for trade press advertisements urging Paramount to change the plot, and Nimoy even received death threats. Test audiences reacted badly to Spock's death and the film's ending's dark tone, so it was made more uplifting by Bennett. The scene of Spock's casket on the planet and Nimoy's closing monologue were added; Meyer objected, but did not stand in the way of the modifications. Nimoy did not know about the scene until he saw the film, but before it opened, the media reassured fans that "Spock will live" again. Due to time constraints, the casket scene was filmed in an overgrown corner of San Francisco's Golden Gate Park, using smoke machines to add a primal atmosphere. The shoot lasted from midday to evening, as the team was well aware there would be no time for reshoots. Special consideration was given during filming to allow for integration of the planned special effects. Television monitors standing in for computer displays were specially calibrated so that their refresh rate did not result in banding on film. Due to a loss of resolution and quality resulting from rephotographing an element in an optical printer, live action sequences for effects were shot in 65mm or VistaVision formats to compensate. When the larger prints were reduced through an anamorphic lens on the printer, the result was a Panavision composite. Effects With a short timeframe to complete The Wrath of Khans special effects sequences, effects supervisor Jim Veilleux, Meyer, Jennings, Sallin and Minor worked to transform the written ideas for the script into concrete storyboards and visuals. The detailed sequences were essential to keep the film's effects from spiraling out of control