Epson PowerLite E20 vs Promethean UST-P3
Bold marks the better figure where both are stated to the same standard. “—” means the manufacturer doesn't state it.
| Epson PowerLite E20 MSRP $379 | Promethean UST-P3 MSRP $499 | |
|---|---|---|
| Display system | ||
| Imaging technology | 3LCD | DLP |
| Technology brand | 3LCD | — |
| Number of imaging devices | 3 | — |
| Chip / panel diagonal | 0.55 in | 0.65 in |
| Native aspect ratio | 4:3 | 16:10 |
| Native resolution | 1024 × 768 | 1280 × 800 |
| Optics | ||
| Throw ratio | 1.44–1.95:1 | 0.35:1 |
| Projection distance table | 50″: 1.46–1.98 m · 60″: 1.76–2.38 m · 70″: 2.05–2.78 m · 80″: 2.35–3.18 m · 100″: 2.94–3.98 m · 150″: 4.42–5.98 m · 200″: 5.9–7.97 m | 80″: 0.28 m · 87″: 0.34 m · 97″: 0.42 m · 100″: 0.45 m |
| Zoom type | Digital | Digital |
| Zoom ratio | 1.35× | — |
| Focus | Manual | Manual |
| Focal length | 16.7 mm | — |
| F-number | 1.44 | — |
| Interchangeable lens | — | No |
| Image size range | 30–350 in | 80–100 in |
| Vertical keystone | -30–30° | -40–40° |
| Horizontal keystone | -30–30° | — |
| Corner / warp correction | 4pt | — |
| Light source | ||
| Light source type | Lamp | Lamp |
| Light source detail | UHE (Ultra High Efficiency) lamp | UHP lamp |
| Lamp wattage | 210 W | 240 W |
| Light source life | Eco: 12,000 h · Normal: 6,000 h | Normal: 5,000 h · Eco: 8,000 h |
| Life definition | — | Unspecified |
| Cool-down time | 0 s | — |
| Brightness | ||
| ISO light output | 3,400 lm | — |
| Colour light output (CLO) | 3,400 lm (colour) | — |
| Claimed brightness (non-standard) | — | 3,150 |
| Claimed brightness unit | — | Unspecified |
| Brightness by mode | High: 3,400 lm · Eco: 2,200 lm | — |
| Contrast & black level | ||
| Dynamic contrast | 15,000:1 | 2,300:1 |
| Colour | ||
| Gamma / EOTF presets | — | 2.2, 2.4 |
| Bit depth / 'number of colours' | 10 bitDerived | — |
| Calibration & picture control | ||
| Colour management system | — | 6-axis |
| Audio | ||
| Speaker power | 5 W | 20 W |
| Speaker count | 1 | 2 |
| Audio channels | Mono | Stereo |
| Audio outputs | 3.5 mm | 3.5 mm |
| Inputs, control & connectivity | ||
| Max input signal | — | 3840 × 2160 |
| HDMI port count | 1 | 2 |
| Audio input terminals | 3.5 mm, Rca | 3.5 mm |
| Horizontal scan frequency | — | 15–91.4 kHz |
| Vertical scan frequency | — | 24–120 Hz |
| VGA input | Yes | Yes |
| USB media playback | No | — |
| RS-232 | Yes | Yes |
| LAN control | No | Yes |
| Control ecosystem drivers | — | Crestron |
| Wi-Fi | None | — |
| Ethernet | No | Yes |
| 3D | ||
| 3D support | — | Yes |
| 3D formats | — | Frame sequential, Top-bottom, Side-by-side, Frame packing |
| Setup automation | ||
| Auto keystone | No | — |
| Acoustic noise | ||
| Fan noise (sound pressure) | Eco: 28 dB(A) · Normal: 37 dB(A) | — |
| Environment & power | ||
| Operating temperature | 5–40°C | 0–40°C |
| Operating humidity | 20–80%RH | 10–85%RH |
| Altitude / high-altitude mode | 3,048 m | — |
| High-altitude mode | Yes | — |
| Operating orientations | Table, Ceiling, Rear | Table, Ceiling, Rear |
| Rated voltage | 100–240 V | 100–240 V |
| Rated frequency | 50–60 Hz | — |
| Power consumption (max) | — | 330 W |
| Power consumption by mode | Eco: 235 W · Normal: 345 W | — |
| Standby power | 0.3 W | 0.5 W |
| Physical & installation | ||
| Width | 302 mm | 288 mm |
| Depth | 249 mm | 375 mm |
| Height | 92 mm | 168 mm |
| Weight | 2.7 kg | 4.8 kg |
| Colours / finishes | White | Black |
| Mount hole pattern | Thread: M4 · Screw length mm: 9 | Thread: M4 · Screw length mm: 12 |
| Air filter | Replaceable | — |
| Safety & compliance | ||
| Photobiological risk group | — | RG1 |
| Safety & market certifications | FCC, UL | CE, FCC, UL, CCC |
| Support & ownership | ||
| Warranty | 🇺🇸 US 2 yr · 🇨🇦 CA 2 yr · 🇪🇺 EU 3 yr | — |
| Light-source warranty | 90 days (lamp limited warranty) | — |
| User manual | https://files.support.epson.com/docid/cpd5/cpd59679.pdf | https://cdn.cs.1worldsync.com/55/fb/55fb8d82-0779-48d1-9c55-233622ca8bbd.pdf |
| In the box | ||
| Box contents | Projector, Power cord, Hdmi cable, Remote, Batteries, Software cd, Quick setup guide, Warranty card | Projector, Remote, Batteries, Quick install guide, Vga cable, Power cord, Hdmi cable |
| Remote type | — | IR |