IMAX - Technical Specifications

Technical Specifications

IMAX (15/70)

  • spherical lenses
  • 70 mm film, 15 perforations per frame
  • horizontal rolling loop movement, from right to left (viewed from base side)
  • 24 frames per second
  • camera aperture: 70.41 mm × 52.63 mm (2.772 in × 2.072 in)
  • projection aperture: at least 2 mm (0.079 in) less than camera aperture on the vertical axis and at least 0.41 mm (0.016 in) less on the horizontal axis
  • aspect ratio: 1.43:1
  • DMR aspect ratio: 1.89:1, 2.39:1

IMAX Dome/OMNIMAX
Same as IMAX except:

  • fisheye lenses
  • lens optically centered 9.4 mm (0.37 in) above film horizontal center line
  • projected elliptically on a dome screen, 20° below and 110° above perfectly centered viewers

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