Because 70mm film and projectors are costly and difficult to mass produce, and because the size of auditoriums that house full-size IMAX screens make them expensive to construct, IMAX debuted a digital projection system in 2008 to use with shorter 1.90:1 aspect ratio screens.
由于70毫米胶片和投影仪价格昂贵且难以大规模生产，并且由于放置全尺寸IMAX屏幕的放映厅的尺寸使其构造成本高昂，因此IMAX于2008年推出数字投影系统，以使用更短的1.90：1宽高比屏幕。