ViewSonic PX749-4K
#12 in 4KFull review
A bright, low-lag 4K gaming projector for console and PC players who already have a streaming device.
Amazon $1,180$1,180
The ViewSonic PX749-4K is the better projector overall, rated 4.3 to 4.2. The ViewSonic PX749-4K leads on setup. The ViewSonic PX749-4K costs $619.99 less ($1,180 vs $1,799.99).
ViewSonic LS740-4K
#16 in 4KFull review
A bright 4K laser projector for living rooms with ambient light, golf simulators and large screens, for buyers who will add their own streaming device.
Amazon $1,799.99$1,799.99
Prices were last checked October 29, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the ViewSonic PX749-4K for setup (Auto keystone, 1.3x zoom vs 1.6x zoom).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 4K projector; a clear win is highlighted. How we rank explains each one.
| Factor weight | ViewSonic PX749-4K | ViewSonic LS740-4K |
|---|---|---|
| Overall rating | 4.3/5 | 4.2/5 |
| Brightness 25% | 100 4,000 ANSI lumens | 100 5,000 ANSI lumens |
| Value 15% | 100 $0.29 per lumen | 96 $0.36 per lumen |
| Resolution 10% | 100 4K (pixel shift) | 100 4K (pixel shift) |
| Streaming 15% | 0 no built-in apps; needs a streaming stick | 0 no built-in apps; needs a streaming stick |
| Setup 10% | 50 Auto keystone, 1.3x zoom | 20 1.6x zoom |
| Light life 10% | 100 20,000 hour lamp | 100 30,000 hour laser |
| Gaming 10% | 100 4.2 ms input lag | 100 4.2 ms input lag |
| Warranty 5% | 100 3-year warranty | 100 3-year warranty |
Specifications
| ViewSonic PX749-4K | ViewSonic LS740-4K | |
|---|---|---|
| Picture | ||
| Brightness | 4,000 ANSI | 5,000 ANSI |
| Native resolution | 1920 x 1080 (1080p) | 1920 x 1080 (1080p) |
| Picture resolution | 4K (pixel shift from 1920x1080) | 4K (pixel shift from 1920x1080) |
| Display | DLP | DLP |
| Light source | lamp | laser |
| Light source life | 20,000 hours | 30,000 hours |
| HDR | HDR10, HLG | - |
| Dynamic contrast | 12,000:1 | 3,000,000:1 |
| Placement | ||
| Throw | Standard throw (1.1:1) | Standard throw (1.4:1) |
| Largest image | 300 in | 300 in |
| Autofocus | No | No |
| Auto keystone | Yes | No |
| Obstacle avoidance | No | No |
| Auto screen fit | No | No |
| Optical zoom | 1.3x | 1.6x |
| Streaming and gaming | ||
| Built-in apps | None | None |
| Input lag | 4.2 ms | 4.2 ms |
| Top refresh rate | 240 Hz | 240 Hz |
| HDMI ports | 2 | 2 |
| Speakers | 10 W | 15 W |
| Build | ||
| Battery | None | None |
| Fan noise | 33 dB | 32 dB |
| Power | 310 W | 165 W |
| Dimensions | 12.28 x 8.74 x 4.25 in (W x D x H) | 11.3 x 8.5 x 5.1 in (W x D x H) |
| Weight | 6.6 lb | 6.8 lb |
| Warranty | 3 years | 3 years |
| Released | 2023-06 | 2026-08 |