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- UHZ55 vs LS901-4K
Optoma UHZ55 vs ViewSonic LS901-4K
What UHZ55 does better (3) and where LS901-4K wins (5) — every spec side by side.
Why is UHZ55 better than LS901-4K?
- Light source life30,000 h vs 20,000 h+50%
- Fan noise29 dB vs 31 dB+7%
- HDMI inputs3 vs 2+50%
Why is LS901-4K better than UHZ55?
- Brightness (ANSI / ISO lumens)3,000 lm vs 5,500 lm+83%
- Lens shiftNone vs Vertical
- Built-in speakers (total output)20 W vs 30 W+50%
- HDR supportNo · UHZ55: Yes
- Optical zoom1.3× vs 2×+54%
Specifications
Side by side
| Picture | ||
| Resolution (on screen) | 3840 × 2160 (4K UHD) | 3840 × 2160 (4K UHD) |
| Native panel resolution | 1920 × 1080 (Full HD) | 1920 × 1080 (Full HD) |
| 4K method | 4K by pixel shifting | 4K by pixel shifting |
| Display technology | DLP | DLP |
| Light source | Laser | Laser |
| Brightness (ANSI / ISO lumens) | 3,000 lm | 5,500 lm |
| Contrast ratio (dynamic / claimed) | 2,500,000:1 | — |
| HDR support | No | Yes |
| 3D playback | Yes | — |
| Gaming | ||
| Maximum refresh rate | 120 Hz | — |
| Game / low-latency mode | Yes | — |
| Lens & placement | ||
| Throw ratio | 1.21:1 | 1.2:1 |
| Throw ratio (zoomed in) | 1.59:1 | 2.04:1 |
| Throw type | Standard throw (1.0:1 and longer) | Standard throw (1.0:1 and longer) |
| Distance for a 100″ 16:9 image | 2.68 m | 2.66 m |
| Smallest image size | 35″ | 30″ |
| Largest image size | 300″ | 300″ |
| Optical zoom | 1.3× | 2× |
| Lens shift | None | Vertical |
| Keystone correction | Yes | Yes |
| Automatic keystone correction | No | No |
| Sound | ||
| Built-in speakers (total output) | 20 W | 30 W |
| Smart & streaming | ||
| Built-in smart platform | Yes | — |
| Wi-Fi | Yes | — |
| Connectivity | ||
| HDMI inputs | 3 | 2 |
| HDMI version | 2 | — |
| USB port | Yes | Yes |
| Ethernet (LAN) | Yes | Yes |
| VGA input | No | No |
| Audio output | Yes | Yes |
| Battery, power & lifetime | ||
| Power consumption | 230 W | — |
| Light source life | 30,000 h | 20,000 h |
| Design & noise | ||
| Fan noise | 29 dB | 31 dB |
| Fan noise (eco mode) | 27 dB | 25 dB |
| Weight | 4.8 kg | — |
| Width | 337 mm | — |
| Height | 120 mm | — |
| Depth | 265 mm | — |
| Colours | Black | White |
