Re: Transformers 3: Dark of the Moon (2011)
About 70% of the film was shot in 3-D,
using Arri Alexa and Sony F35 cameras,
while other footage was shot in the anamorphic format on 35mm film and converted into 3D in post production.
35mm film was used for scenes filmed in slow motion, and scenes which required higher image quality than the HD digital 3D cameras could provide,
such as closeups of faces or shots of the sky.
35mm cameras were also used for scenes where the 3D cameras proved to be too heavy, or were subject to strobing or electrical damage from dust.
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