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- HD29x vs LS751HD
Optoma HD29x vs ViewSonic LS751HD
What HD29x does better (2) and where LS751HD wins (9) — every spec side by side.
Dimensions
Size comparison
HD29xLS751HD
| HD29x | LS751HD | Difference | |
|---|---|---|---|
| Height | 108 mm | 132 mm | −24 mm |
| Width | 316 mm | 337 mm | −21 mm |
| Depth | 244 mm | 265 mm | −21 mm |
| Weight | 2.9 kg | 4.5 kg | −1.6 kg |
Drawn to the same scale from the official dimensions (front and side).
Why is HD29x better than LS751HD?
- Fan noise29 dB vs 32 dB+10%
- Weight2.88 kg vs 4.5 kg+56%
Why is LS751HD better than HD29x?
- Light source life4,000 h vs 20,000 h5×
- Brightness (ANSI / ISO lumens)4,000 lm vs 5,000 lm+25%
- Lens shiftNone vs Vertical
- Contrast ratio (dynamic / claimed)22,000:1 vs 300,000:113.6×
- Maximum refresh rate85 Hz vs 120 Hz+41%
- HDR supportNo · HD29x: Yes
- Ethernet (LAN)No · HD29x: Yes
- Optical zoom1.1× vs 2×+82%
- Power consumption290 W vs 245 W+18%
Specifications
Side by side
| Picture | ||
| Resolution (on screen) | 1920 × 1080 (Full HD) | 1920 × 1080 (Full HD) |
| Native panel resolution | 1920 × 1080 (Full HD) | 1920 × 1080 (Full HD) |
| Display technology | DLP | DLP |
| Light source | — | Laser |
| Brightness (ANSI / ISO lumens) | 4,000 lm | 5,000 lm |
| Contrast ratio (dynamic / claimed) | 22,000:1 | 300,000:1 |
| HDR support | No | Yes |
| 3D playback | Yes | Yes |
| Gaming | ||
| Maximum refresh rate | 85 Hz | 120 Hz |
| Game / low-latency mode | Yes | — |
| Lens & placement | ||
| Throw ratio | 1.5:1 | 1.4:1 |
| Throw ratio (zoomed in) | 1.66:1 | 2.24:1 |
| Throw type | Standard throw (1.0:1 and longer) | Standard throw (1.0:1 and longer) |
| Distance for a 100″ 16:9 image | 3.32 m | 3.1 m |
| Smallest image size | 30″ | 30″ |
| Largest image size | 300″ | 300″ |
| Optical zoom | 1.1× | 2× |
| Lens shift | None | Vertical |
| Keystone correction | Yes | Yes |
| Automatic keystone correction | No | No |
| Sound | ||
| Built-in speakers (total output) | 10 W | 10 W |
| Smart & streaming | ||
| Wi-Fi | Yes | Yes |
| Connectivity | ||
| HDMI inputs | 2 | 2 |
| HDMI version | 2 | 2 |
| USB port | Yes | Yes |
| Ethernet (LAN) | No | Yes |
| VGA input | No | No |
| Audio output | Yes | Yes |
| Battery, power & lifetime | ||
| Power consumption | 290 W | 245 W |
| Light source life | 4,000 h | 20,000 h |
| Light source life (eco mode) | 10,000 h | 30,000 h |
| Design & noise | ||
| Fan noise | 29 dB | 32 dB |
| Fan noise (eco mode) | 27 dB | 29 dB |
| Weight | 2.88 kg | 4.5 kg |
| Width | 316 mm | 337 mm |
| Height | 108 mm | 132 mm |
| Depth | 244 mm | 265 mm |
| Colours | White | White |
