Thank you.

What will the aspect ratio be of the new digital IMAX experience? Their 15/70mm screens are 1.44:1. The HDTV digital ratio is 1.78:1 and I believe the digital cinema ratio is closer to 1.85:1. These are the pixel figures I came up with from searching the internet for information:

HD TV (Based on 60p or 30i frames per second)
2K, 1920 x 1080 = 1.78:1
4K, 3840 x 2160 = 1.78:1 (Doesn't exist yet for broadcast TV.)

Digital Cinema (Based on 24 frames per second - 48p? 72? 144p?)
2K, 2040 x 1080 = 1.89:1 (Close to 1.85:1 35mm Cinema Standard)
4K, 4080 x 2160 = 1.89:1 (Close to 1.85:1 35mm Cinema Standard)

Another Digital Cinema Figure I came across:
2k, 1996 x 1080 = 1.85:1

The IMAX screens to be placed in existing multiplex theatres are supposed to be 25% larger. The AMC theatres already have 1.85:1 wall to wall screens--will IMAX Digital screens increase the height of the screens by 25% to achieve that 1.44:1 IMAX standard picture?

Are there DLP chips with a 1.44:1 ratio, or how is this ratio dilemma be solved? Current IMAX DMR 15/70mm releases of Hollywood films often or always letterbox the image to achieve the cinema standard? Grant.