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- Dolphin 2 vs HD28e
ETOE Dolphin 2 vs Optoma HD28e
What Dolphin 2 does better (0) and where HD28e wins (4) — every spec side by side.
Why is Dolphin 2 better than HD28e?
Dolphin 2 has no measurable advantages in this pair.
Why is HD28e better than Dolphin 2?
- Brightness (ANSI / ISO lumens)110 lm vs 3,800 lm34.5×
- Light source life800 h vs 4,000 h5×
- HDMI inputs0 vs 1
- Audio outputNo · Dolphin 2: Yes
Specifications
Side by side
| Picture | ||
| Resolution (on screen) | — | 1920 × 1080 (Full HD) |
| Native panel resolution | — | 1920 × 1080 (Full HD) |
| Display technology | — | DLP |
| Light source | RGB triple laser | — |
| Brightness (ANSI / ISO lumens) | 110 lm | 3,800 lm |
| Contrast ratio (dynamic / claimed) | — | 30,000:1 |
| HDR support | — | No |
| 3D playback | — | Yes |
| Gaming | ||
| Maximum refresh rate | — | 120 Hz |
| Game / low-latency mode | — | Yes |
| Lens & placement | ||
| Throw ratio | — | 1.47:1 |
| Throw ratio (zoomed in) | — | 1.62:1 |
| Throw type | — | Standard throw (1.0:1 and longer) |
| Distance for a 100″ 16:9 image | — | 3.25 m |
| Smallest image size | — | 28″ |
| Largest image size | — | 300″ |
| Optical zoom | — | 1.1× |
| Lens shift | — | None |
| Autofocus | — | No |
| Keystone correction | — | Yes |
| Automatic keystone correction | — | No |
| Sound | ||
| Built-in speakers (total output) | — | 5 W |
| Smart & streaming | ||
| Smart platform | Google TV | — |
| Built-in smart platform | Yes | — |
| Netflix (officially licensed) | Yes | — |
| Wi-Fi | — | Yes |
| Chromecast built-in | Yes | — |
| Voice assistant | Google Assistant | — |
| Connectivity | ||
| HDMI inputs | 0 | 1 |
| HDMI version | — | 1.4 |
| USB port | Yes | Yes |
| Ethernet (LAN) | No | No |
| VGA input | No | No |
| Audio output | No | Yes |
| Battery, power & lifetime | ||
| Power consumption | — | 295 W |
| Light source life | 800 h | 4,000 h |
| Light source life (eco mode) | — | 10,000 h |
| Design & noise | ||
| Fan noise | — | 25 dB |
| Weight | — | 2.5 kg |
| Width | — | 316 mm |
| Height | — | 108 mm |
| Depth | — | 244 mm |
| Colours | White | White |
