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
The ViewSonic LS740-4K rates 4.2 among 4K projectors; the ViewSonic LS740HD rates 3.8 among native 1080p ones. The ViewSonic LS740HD costs $800 less ($999.99 vs $1,799.99).
ViewSonic LS740HD
#17 in Native 1080pFull review
A bright, low maintenance 1080p laser projector for rooms with ambient light, golf simulators or big screens. Not for serious gaming.
Amazon $999.99$999.99
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.
Scores side by side
These two sit in different type classes (4K and native 1080p), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.
| Factor weight | ViewSonic LS740-4K | ViewSonic LS740HD |
|---|---|---|
| Overall rating | 4.2/5 | 3.8/5 |
| Brightness 25% | 100 5,000 ANSI lumens | 100 5,000 ANSI lumens |
| Value 15% | 96 $0.36 per lumen | 94 $0.20 per lumen |
| Resolution 10% | 100 4K (pixel shift) | 100 1920 x 1080 native |
| Streaming 15% | 0 no built-in apps; needs a streaming stick | 0 no built-in apps; needs a streaming stick |
| Setup 10% | 20 1.6x zoom | 20 1.3x zoom |
| Light life 10% | 100 30,000 hour laser | 100 30,000 hour laser |
| Gaming 10% | 100 4.2 ms input lag | 1 49.5 ms input lag |
| Warranty 5% | 100 3-year warranty | 100 3-year warranty |
Independent measurements
ViewSonic LS740-4K
No independent test published yet.
ViewSonic LS740HD
| Tested by | Brightness | Input lag | Contrast | Conditions |
|---|---|---|---|---|
| ProjectorCentral | 4,783 lm | 49.5 ms | - | Bright mode; lag measured at 1080p/60 and unchanged in Gaming mode. |
Specifications
| ViewSonic LS740-4K | ViewSonic LS740HD | |
|---|---|---|
| Picture | ||
| Brightness | 5,000 ANSI | 5,000 ANSI |
| Native resolution | 1920 x 1080 (1080p) | 1920 x 1080 (1080p) |
| Picture resolution | 4K (pixel shift from 1920x1080) | 1080p |
| Display | DLP | DLP |
| Light source | laser | laser |
| Light source life | 30,000 hours | 30,000 hours |
| Dynamic contrast | 3,000,000:1 | 3,000,000:1 |
| Placement | ||
| Throw | Standard throw (1.4:1) | Standard throw (1.1:1) |
| Largest image | 300 in | 300 in |
| Autofocus | No | No |
| Auto keystone | No | No |
| Obstacle avoidance | No | No |
| Auto screen fit | No | No |
| Optical zoom | 1.6x | 1.3x |
| Streaming and gaming | ||
| Built-in apps | None | None |
| Input lag | 4.2 ms | 49.5 ms |
| Top refresh rate | 240 Hz | 120 Hz |
| HDMI ports | 2 | 2 |
| Speakers | 15 W | 15 W |
| Build | ||
| Battery | None | None |
| Fan noise | 32 dB | 30 dB |
| Power | 165 W | 210 W |
| Dimensions | 11.3 x 8.5 x 5.1 in (W x D x H) | 286 x 216 x 129 mm (W x D x H) |
| Weight | 6.8 lb | 6.6 lb |
| Warranty | 3 years | 3 years |
| Released | 2026-08 | 2023-06 |