[citation][nom]Zirbmonkey[/nom]yup, that's what IMAX is... sort of. IMAX uses two 2K resolution projectors overlaid on each other. This one does 4K in a single shot. So yes, you get better than an IMAX picture with this thing.[/citation]
No, this is nowhere near IMAX in terms of resolution, it could rather be seen as an alternative to the standard 35mm film being used in conventional cinemas. 4k means 4000 vertical lines just like 1080p and 720p. Here's a quote from a letter sent from IMAX customer service after an inquirey regarding the screen resolution of the IMAX:
[citation][nom]Brian Bonnick, IMAX[/nom]The smallest resolve power of neg film is about 6 microns. As a result, the limiting resolution on a 35mm negative frame is around 3700×2700 pixels. This means a maximum of 2000 lines of vertical resolution for an image with a 1.85 aspect ratio and even less for a 2.35:1 aspect ratio (1570 lines).
The resolution on a 35mm release print is much lower due to MTF generation loss in the film process. A recent paper from SMPTE journal reported that the real resolution that audience can discern in a high-quality 35mm cinema is about 1600 horizontal pixels, which translates to about 850 lines for 1:85 and less than 700 lines for 2.35. Most 35mm cinemas fair even worse than those numbers.
Similarly, an IMAX 15/70 frame has a limiting resolution of close to 12,000 horizontal pixels. For an aspect ratio of 1.36:1, there are about 8700 lines of vertical resolution on each 15/70 negative frame. Because the release print for a typical IMAX documentary is printed directly from the negative, the geneartion MTF loss will be reduced. It is estimated that audience can discern no less than 4500 lines of vertical resolution from a good IMAX release print. So as you can see there exists quite a difference between the image quality of an IMAX image vs that of a 35mm image.
Brian Bonnick, P.Eng.
Sr. Vice President, Technology[/citation]