On Location for "Proud American". The iwerks camera shoots 65mm film moving through the camera horizontally. The individual frames are 15 perforations wide and measure 71.09 by 52.63mm, ten times larger than the standard 35mm frame. The film is then printed on 70mm and projected onto a screen measuring 80 feet by 100 feet. IMAX stands for 'Image Maximization'
