ViewSonic LX750-4K Laser Projector 4K UHD 3500 ANSI Lumens DLP HDR10 240Hz Low Input Lag

The ViewSonic LX750-4K sets a new benchmark for high-brightness 4K projection, combining a laser phosphor light source with a fast 240Hz refresh rate and remarkably low input lag. Unlike lamp-based projectors that dim over time, this model delivers consistent 3500 ANSI lumens for up to 30,000 hours in SuperEco mode, making it ideal for bright living rooms, gaming setups, and professional presentations where image quality cannot be compromised.

Highlights

• True 4K UHD resolution (3840 x 2160) with 3,000,000:1 dynamic contrast for razor-sharp detail and deep blacks.
• Laser phosphor light source with 20,000 hours (Normal) / 30,000 hours (SuperEco) lifespan — no lamp replacements needed.
• 3500 ANSI lumens brightness ensures vivid images even in ambient light.
• Ultra-low input lag of 4.2ms at 1080p/240Hz for competitive gaming and smooth motion.
• HDR10 and HLG support with 100% Rec.709 colour gamut for accurate, lifelike colours.
• 1.3x optical zoom and 1.06–1.38 throw ratio for flexible installation in various room sizes.
• Integrated 10W speaker and audio output for immediate sound without external equipment.

In daily use

The LX750-4K excels in both entertainment and productivity scenarios. Its high brightness and 4K clarity make movie nights immersive, while the fast refresh rate and low lag satisfy even serious gamers. Auto vertical keystone correction and horizontal/vertical manual adjustment simplify setup, and the projector’s quiet 26 dB Eco mode keeps distractions to a minimum. Connectivity is straightforward with two HDMI 2.0b ports (HDCP 2.2), a USB Type-A power output for streaming sticks, and a 3.5mm audio jack for external speakers or headphones.

Full specifications

• Display technology: DLP
• Light source: Laser phosphor
• Native resolution: 3840 x 2160 (4K UHD)
• Brightness: 3500 ANSI lumens
• Contrast ratio: 3,000,000:1 (dynamic)
• Light source life: 20,000 hours (Normal), 30,000 hours (SuperEco)
• Throw ratio: 1.06–1.38
• Optical zoom: 1.3x
• Keystone correction: Horizontal/Vertical, Auto Vertical
• HDR support: HDR10, HLG
• Input lag: 4.2ms (1080p @ 240Hz)
• Max refresh rate: 240Hz (1080p)
• HDMI inputs: 2 (HDMI 2.0b with HDCP 2.2)
• Audio output: 1 x 3.5mm jack
• USB Type-A port: 1 (Power out 5V/1.5A)
• Integrated speaker power: 10W
• Noise level (Eco mode): 26 dB
• Power consumption (max): 350W
• Colour gamut: 100% Rec.709
• Offset: 100% ± 5%

Final note

For those seeking a future-proof 4K projector that balances brightness, colour accuracy, and gaming performance, the ViewSonic LX750-4K is a compelling choice that eliminates lamp maintenance and delivers stunning visuals for years to come.