1442 ASTM E57 3D File Format Model The E57 file format is a format for storing point clouds, images, and metadata produced by 3D imaging systems. 1 Digital Preservation Department / The National Archives 31 Mar 2014 09 Feb 2022 fmt/643 PUID model/e57 MIME e57 File extension 972 E57 3D File Format BOF: ASTM-E57 1 Absolute from BOF 0 0 4153544D2D453537