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White rectangular DLP home theater projector with front lens and side vents

ViewSonic

ViewSonic PX749-4K 4000-lumen 4K DLP home theater projector

SKU CH-N80Z-JW1AW MPN PX749-4K

4K DLP projector with 4000 lumens, 1.3x optical zoom and 4.2 ms input lag for gaming up to 300 inches

  • Cabinet ColorWhite
  • TypeDLP
  • Aspect RatioNative: 16:9 Supported: 4:3
  • Display Size30 to 300" / 76.2 to 762.0 cm
  • Native Resolution3840 x 2160
  • Brightness4,000 lumens
  • 4K UHD resolution with 3840 x 2160 pixels for sharp detail
  • 4000 ANSI lumens brightness keeps images vivid in lit rooms
  • 2 ms input lag and 240 Hz refresh rate suit fast gaming
  • 3x optical zoom plus vertical and horizontal keystone up to 40°
  • USB-C direct streaming and HDMI 2.0 for flexible connectivity

Product definition

The ViewSonic PX749-4K is a 4000-lumen DLP home theater projector with a native 3840 x 2160 resolution and a 16:9 aspect ratio. It delivers a 30 to 300-inch image size and includes a manual 1.3x optical zoom lens. The unit offers 4.2 ms input latency and a 240 Hz refresh rate for responsive gaming. Connectivity includes two HDMI 2.0 ports, USB-C, RJ45 and RS-232 control.

Who this suits

Buyers who want a bright 4K projector for living-room movies and console gaming with flexible placement will appreciate the 1.13 to 1.47:1 throw ratio and auto keystone correction. The 10 W Harman-tuned speaker covers casual audio needs. Buyers who need motorised lens shift, lens memory or native 21:9 support should look at other models. Installers requiring HDBaseT or 12G-SDI connectivity will not find those interfaces here.

Deciding specification

The two HDMI 2.0 inputs limit 4K signals to 60 Hz, so anyone planning to run 4K at higher frame rates from a PC or next-generation console must verify that this bandwidth meets their needs.

Highlights

  • 4K UHD resolution with 3840 x 2160 pixels for sharp detail
  • 4000 ANSI lumens brightness keeps images vivid in lit rooms
  • 2 ms input lag and 240 Hz refresh rate suit fast gaming
  • 3x optical zoom plus vertical and horizontal keystone up to 40°
  • USB-C direct streaming and HDMI 2.0 for flexible connectivity

Specifications

BrandViewSonic
ModelPX749-4K
Cabinet ColorWhite
TypeDLP
Aspect RatioNative: 16:9
Supported: 4:3
Display Size30 to 300" / 76.2 to 762.0 cm
Native Resolution3840 x 2160
Brightness4,000 lumens
LensFocus: Manual
Optical Zoom: Manual: 1.3x
Throw Distance29.53 to 384.25" / 0.75 to 9.76 m
Keystone CorrectionAuto / Manual to Vertical: +/- 40°
Manual to Horizontal: +/- 40°
Throw Ratio1.13 to 1.47:1 (100" Screen Size @ 8.2' / 2.5 m)
Input Video Connectors2 x HDMI 2.0
Output Audio Connectors1 x 1/8" / 3.5 mm Mini
Network ConnectorsRJ45
Other Connectors1 x DE-9/DB-9 (RS-232) Input
1 x 12 V Trigger (Control) Output
USB1 x USB-C
1 x USB-A (Service)
Built-in Speakers1 x 10W
Power Supply100 - 240 VAC, 50/60Hz
Power ConsumptionMedium Brightness: 310 W
Standby Mode (Lamp Off): < 0.5 W
Temperature RangeOperating Conditions: 32 to 104°F / 0 to 40°C
Storage Conditions: -4 to 140°F / -20 to 60°C
Humidity Rangeup to 90% Humidity
Dimensions4.3'' x 12.3'' x 8.7"
Weight6.6 lbs.
Shipping weight4.12 kg
Package size417 × 320 × 165 mm

Questions about this item

Do I need a screen or can I project onto a wall?

The PX749-4K produces a 30 to 300 inch image at 4000 lumens; a dedicated screen gives the best contrast but a flat white wall works for casual viewing.

Will my older 1080p Blu-ray player connect to the two HDMI 2.0 ports?

Yes, the HDMI 2.0 inputs are backward compatible so a 1080p source will display correctly, upscaled to the native 3840 x 2160 resolution.

How can I verify the 4.2 ms input lag and 240 Hz refresh rate are active?

Enable the projector's on-screen information display; it shows the current signal resolution, refresh rate and low-latency mode status.

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