IMAX Laser vs Xenon IMAX with Laser versus IMAX Digital (xenon)

What the two systems are

IMAX Digital with xenon lamps is the multiplex system IMAX introduced in 2008. Wikipedia describes it as two 2K projectors with a perceived resolution near 2.9K. IMAX with Laser replaced the lamp with laser illumination and moved to 4K. Wikipedia describes the dual-projector version as the system rolled out starting in December 2014 and says each projector shows four times the detail of a xenon digital projector. IMAX's own annual report says the company "is no longer offering" the xenon system for new signings and calls its laser line "a suite of laser-based digital projection systems" that deliver increased resolution, sharper and brighter images, deeper contrast and "the widest range of colors available to filmmakers today."

The installed base is shifting fast. IMAX counted 757 laser systems at December 31, 2025, up from 607 a year earlier, against 1,089 xenon systems, down from 1,178. The backlog included 216 new laser systems and 131 laser upgrades. Both numbers are from the 10-K; IMAX did not break the laser total out by configuration in the pages I loaded.

Resolution and light source

Xenon systems use lamps and two 2K projectors. SlashGear says the laser version drops the prism and aims its lasers at the DMD chips through what it calls a "Free Space Light Engine." Engadget's 2016 hands-on describes the GT laser as two 4K DLP projectors with six DMD chips in total. IMAX's 2018 release for AMC calls the system a "4K laser projection system" with "a new optical engine." Wikipedia adds that the laser system runs at 60 frames per second.

Brightness, contrast and color

Brightness is the one figure with a source. Engadget reports a 22 foot-lambert image, described as 50 percent brighter than the industry standard. For scale, Wikipedia's foot-lambert article notes SMPTE 196M recommended 16 fL for commercial theaters, with typical film base density giving about 14 fL; the current revision specifies 55 cd/m². Since 1 fL equals 3.426 cd/m², 22 fL is about 75 cd/m².

Contrast is quoted only in relative terms. Wikipedia says laser contrast is roughly double that of 15/70 film projection, and gives the film projector's contrast as about 2,500:1. Doubling that would imply near 5,000:1, but that is my arithmetic, and IMAX has not published a laser contrast number in the pages I loaded. I found no sourced contrast or brightness figure for xenon digital. Color is also hedged: Wikipedia claims the full Rec. 2020 gamut, while Engadget in 2016 said the system was capable of Rec. 2020 though no films yet took advantage of it. Treat Rec. 2020 as a capability claim, not proof that today's films use it. The general light-source tradeoff is in laser phosphor light sources and the lamp vs laser tool.

Worked example: brightness in both units

Converting with 1 fL = 3.426 cd/m²: the SMPTE 196M open-gate target of 16 fL is 54.8 cd/m², matching the 55 cd/m² the current revision specifies; the roughly 14 fL a typical film print yields is 48 cd/m²; and Engadget's 22 fL laser figure is 75.4 cd/m². Against 14 fL, 22 fL is a 57% increase, in line with the "50 percent brighter" description. The 10-K adds that laser systems can illuminate the largest screens in the network. Wikipedia says laser testing began in April 2012 and the first installation was at the Cineplex Scotiabank Theatre in Toronto.

Sound and aspect ratio

The laser rollout added a 12-channel sound design with side and overhead channels, against six channels in the standard IMAX layout, per Wikipedia. It sits alongside Dolby Atmos as a premium theater audio system, not a replacement for it.

Laser comes in two shapes. The dual-4K GT Laser can show the full 1.43:1 frame; Engadget's guide to telling real IMAX from LieMAX lists newer single-projector systems (CoLa and XT) as capped at 1.90:1. Xenon digital is also 1.90:1. SlashGear's examples are about 100 × 70 ft for a GT Laser screen and about 60 × 32 ft for a single-projector laser screen. Details on the ratios are in IMAX expanded aspect ratio.

"LieMAX" explained

LieMAX is an informal nickname with no technical definition. Engadget traces it to 2009, when fans complained that IMAX Digital screens in multiplexes were far smaller than the giant film auditoriums. Some fans now apply it to any IMAX screen that is not 1.43:1. It is not an official IMAX format and no auditorium is sold under the name. Engadget's point is that a modern 1.90:1 laser room, with 4K projection and improved brightness, contrast and color, is a different product from the 2K xenon rooms that started the complaint.

How to tell which you are booking

"IMAX 70mm" means film. "IMAX with Laser" does not tell you which laser configuration, and IMAX's theater finder does not list projector details for every showing, so look at the screen shape or ask the theater. Check whether the room is a GT screen if the film uses 1.43:1 sequences. The tier above both, 15/70 film, is covered in IMAX 15/70 film, and the overall system in IMAX. Disney's Infinity Vision label is a separate certification that can sit on top of any of these rooms.