Editing IMAX (section)

==Digital projection==
[[File:IMAX AMC BC 14.jpg|thumb|A typical entrance to an IMAX digital theater, such as the [[AMC Theatres|AMC]] Barton Creek Square 14 in [[Austin, Texas]]]]

The [[digital cinema]] IMAX projection system, debuted in 2008, is designed for use with shorter 1.90:1 aspect ratio screens. The system uses two 2K projectors that can present either 2D or 3D content in [[Digital Cinema Initiatives|DCI]] or IMAX Digital Format (IDF; which in itself is a superset of DCI). IDF initially used 2K-resolution [[Christie (audiovisual company)|Christie]] xenon projectors, with a [[Texas Instruments]] [[Digital Light Processing]] (DLP) engine, but in 2012 IMAX announced that they would be switching to [[Barco (manufacturer)|Barco]] as their primary supplier.<ref name=barco>{{cite web |url=http://3droundabout.com/2012/02/6178/imax-corporation-selects-barco-as-exclusive-worldwide-projection-technology-partner-for-imax-theatres.html |archive-url=https://web.archive.org/web/20120215002016/http://3droundabout.com/2012/02/6178/imax-corporation-selects-barco-as-exclusive-worldwide-projection-technology-partner-for-imax-theatres.html |url-status=usurped |archive-date=February 15, 2012 |title=IMAX Corporation Selects Barco as Exclusive, Worldwide Projection Technology Partner for IMAX Theatres|publisher=3droundabout.com }}</ref> The two 2K images are projected superimposed on each other with a half-pixel offset, using [[super-resolution imaging]] to increase the perceived resolution to approximately 2.9K.

For 3D presentations, one projector is used to display the image for each eye, while 2D presentations use the superimposed images to allow for a brighter 75&nbsp;cd/m<sup>2</sup> image. The Digital IMAX projection system includes a proprietary IMAX Image Enhancer that modifies the output of the digital media server based on feedback from cameras and microphones in the auditorium, and maintains alignment with sub-pixel accuracy.<ref name="IMAX Digital - Slater">{{cite news|last1=Slater|first1=Jim|title=IMAX Digital: It's IMAX, but not as we know it, Jim!|url=https://www.bksts.com/secure/media/26562935.pdf|work=Cinema Technology|date=December 2008|pages=38–41|access-date=February 29, 2016|archive-url=https://web.archive.org/web/20160310042302/https://www.bksts.com/secure/media/26562935.pdf|archive-date=March 10, 2016|url-status=dead|df=mdy-all}}</ref>

Mainly because the system facilitates inexpensive distribution of IMAX features, the company announced in February 2012 that they were renovating specially selected locations around the world to present both 70&nbsp;mm analog as well as digital presentations. To do so, IMAX developed a rail system that moves the projectors in and out to accommodate either a full-frame film print or a digital-only release. These theaters were prepared in time for the release of ''[[The Dark Knight Rises]]'' in July 2012.<ref>{{cite web |url=http://www.filmjournal.com/filmjournal/content_display/news-and-features/features/cinemas/e3ib2de80c71a03c7800389970b540cb2de |title=IMAXimum impact: Studio movies go big with large-format leader|publisher=filmjournal.com|date=May 2012}}</ref>