BenQ Launches W5850 4K UHD Laser Projector for Dedicated Home Cinemas

BenQ has built its reputation by doing something surprisingly difficult in the projector market: keeping one foot in performance and the other firmly planted in reality. While ultra-short-throw projectors and glossy lifestyle models continue to dominate showroom floors and siphon attention with convenience-first compromises—BenQ is doubling down on the unfashionable idea that dedicated home theaters still matter. The newly announced W5850 4K UHD laser projector is a clear statement of intent, aimed squarely at enthusiasts who watch movies in dark rooms, not on credenzas next to houseplants.

Positioned as a refined evolution of the W5800 rather than a flashy pivot, the W5850 focuses on what actually counts for serious home cinema: color accuracy, controlled light output, and installation flexibility for medium-sized AV rooms. It features a laser/phosphor light engine paired with DLP imaging and a precision 16-element lens which can throw a massive 200-inch image from 14-1/2 feet.

In a market increasingly distracted by convenience-driven projectors that prioritize placement over picture integrity, the W5850 feels deliberately old-school in the best way possible: purpose-built, room-dependent, and unapologetically for people who still turn the lights off before pressing play.

BenQ W5850 Key Features and Performance Highlights

4K UHD Resolution: The W5850 uses a 0.47-inch 1080p DLP imaging chip (DMD – Digital Micromirror Device) from Texas Instruments, featuring 2.1 million microscopic mirrors. Rather than relying on a native 4K panel, BenQ employs high-speed XPR pixel shifting, rapidly shifting each pixel both horizontally and vertically at up to 240Hz. This process generates the full 8.3 million addressable pixels required for a 4K UHD image on screen. The switching happens so quickly that the result is perceived as a true 4K image, meeting UHD resolution requirements without visible pixel structure at normal viewing distances.

Laser Light Source: To illuminate its 4K UHD images, the BenQ W5850 uses a laser/phosphor light engine rated at up to 2,600 ANSI lumens. This solid-state design provides the brightness needed to support large-screen projection—up to 200 inches—while maintaining consistent light output and color stability over time. In practical terms, that level of brightness is more than sufficient for dedicated home theater use in a darkened room, even at very large image sizes.

Screen Size: With a 1.6:1 zoom ratio, users can view a 150-inch image with the projector placed at 10.9 feet (minimum) from the screen. If you want the maximum recommended screen size of 200-inches, the minimum required projector-to-screen distance is 14.5 feet.

Projector Placement: The W5850 can be mounted on a table or shelf or on the ceiling at the front or rear of the screen (provided the screen is compatible with rear projection). To aid in projector setup, the W5850 has both vertical and horizontal keystone correction and 4-way motorized lens shift. Lens shift allows users to move the projector’s lens physically without affecting image clarity and is preferred over the use of keystone correction. However, there may be setup situations that require the use of both options.

Pro Tip: The W5850 does not have Lens Memory. This would have allowed it to automatically detect and adjust the content aspect ratio while maintaining Constant Image Height. This means that the aspect ratio and image height must be changed manually. 

CinematicColor: This feature provides color accuracy with enhanced visual details that allow the W5850 to achieve 100% DCI-P3 Color standard.

Factory Calibration: Projector calibration can be both costly and intimidating, which is why BenQ factory-calibrates each W5850 before it leaves production and includes an individual calibration report with the projector. This process targets reference-level accuracy for SDR content, with 100% Rec. 709 color coverage at Delta E <2 and grayscale tracking also held to Delta E <2. In addition, BenQ applies an optimized DCI-P3 color table to improve color accuracy when viewing wider-gamut content, allowing the W5850 to deliver accurate, predictable color performance straight out of the box without requiring immediate professional calibration.

HDR-Pro Technology: This feature provides enhanced dynamic contrast through a variety of technologies. HDR format support includes HDR10, HDR10+, and Hybrid Log Gamma, but Dolby Vision is not supported. Blue Laser Dimming and Dynamic Black Technology increase contrast range in HDR mode, making light and dark scenes more dynamic and vivid. 

Local Contrast Enhancer: This feature automatically adjusts the gamma for each independent scene, improving 4K HDR imagery.

Pro Tip: Projection distance and placement can vary from screen to screen. To compensate for this, the W5850 features an HDR brightness function that allows for customized brightness levels depending on the projection size.

Filmmaker Mode: This feature supports native 24P playback, allowing the W5850 to accept high-definition sources encoded at 24 frames per second without introducing judder. When used in HDR mode, 24P support helps preserve consistent motion cadence and image stability, ensuring films are displayed as intended with smooth, cinema-accurate playback rather than motion artifacts introduced by frame conversion.

Audio Support: While a growing number of projectors incorporate a modest speaker system, the W5850 does not have this feature. As a home theater projector, it is expected that users would most likely have a soundbar or AV receiver/speaker setup. To feed audio from the projector to an external audio system, the W5850 incorporates HDMI eARC and Digital Optical (S/PDIF) outputs. 

Comparison

The Bottom Line 

The BenQ W5850 is unapologetically a home theater projector in the traditional sense—built for dark rooms, large screens, and viewers who still care more about color accuracy and film integrity than where the projector sits on the furniture. Its strengths are clear: a bright and stable laser/phosphor light engine, factory calibration with real-world benefits, ISFccc certification, HDR10+ and Filmmaker Mode support, and a shorter-throw 16-element lens that makes it easier to deploy in smaller dedicated rooms. Add optional 3D support and you’ve got a feature set aimed squarely at movie-first enthusiasts.

What’s missing is just as important. The lack of Lens Memory is a real omission at this level, especially for users running scope screens who expect automated aspect-ratio switching. Gaming support is also an afterthought—input lag is reasonable, but there’s no deeper feature set or positioning that suggests BenQ sees this as anything more than casually game-capable. And at $2,000 more than the previous W5800, the W5850 enters a more competitive and less forgiving price bracket, where Epson and Sony offer compelling alternatives with different trade-offs in contrast, panels, and installation flexibility.

Who is this for? Dedicated home theater owners who watch movies in controlled lighting, value out-of-the-box color accuracy, and want a large-screen cinematic experience without drifting into UST or lifestyle projector compromises. If convenience, gaming features, or automated lens functions top your wish list, look elsewhere. If the lights go off, the curtains close, and movie night still matters, the W5850 makes a strong case.

Price & Availability

The BenQ W5850 is available for $6,999 at B&H Photo.

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