Epson PowerLite 770F vs Optoma 4K400x
 Epson PowerLite 770FMSRP $2,247 |  $1,399 | |
|---|---|---|
| Key differences | ||
| White light output | 4,100 lm ISO (Normal power) | — |
| Throw ratio | 0.25–0.35:1 | 1.5–1.66:1 |
| Lowest input lag | — | 4.5 msDerived |
| HDR formats | — | HDR10, HLG |
| Light source | Laser (phosphor) | Lamp |
| Fan noise | Normal 37 dB(A) · Eco 27 dB(A) | Max 28 dB(A) · Normal 26 dB(A) |
| Price | MSRP $2,247 | $1,399 |
| Room fit | ||
| Distance to screen | 0.55–0.77 m | 3.3–3.7 m |
| Brightness | ||
| Rated brightness | 4,100 lmDerived | — |
| White light output | 4,100 lm ISO (Normal power) | — |
| Colour light output | 4,100 lm (Normal power) | — |
| Claimed brightness (non-standard) | — | 4,000 lm |
| Brightness uniformity | — | 80% |
| Brightness by mode | Normal 4,100 lm · Eco 2,800 lm | — |
| Eco brightness | 68%Derived | — |
| Display system | ||
| Imaging technology | 3LCD | DLP |
| Chip / panel diagonal | 0.62 in | 0.47 in |
| On-screen resolution | 1080p (1920 × 1080)Derived | 4K UHD (3840 × 2160)Derived |
| Native resolution | 1080p (1920 × 1080) | 1080p (1920 × 1080) |
| Native aspect | 16:9Derived | 16:9Derived |
| Addressable resolution | — | 4K UHD (3840 × 2160) |
| Contrast | ||
| Dynamic contrast | Over 2,500,000:1 | 1,000,000:1 |
| Dynamic contrast method | — | Light-source dimming |
| Colour | ||
| Colour bit depth (per channel) | 10 bit | — |
| Gamma / EOTF presets | — | 2.2, 2.4 |
| Colour temperature presets | — | D93, D65, D55, Native |
| HDR | ||
| HDR formats | — | HDR10, HLG |
| Tone mapping | — | Adjustable |
| Calibration | ||
| Colour management (CMS) | — | 6-axis |
| 3D | ||
| 3D | — | Yes |
| 3D formats | — | Frame packing |
| Light source | ||
| Light source | Laser (phosphor) | Lamp |
| Lamp power | — | 240 W |
| Light-source life | 20,000 h normal · 30,000 h eco | 4,000 h max · 10,000 h eco · 15,000 h dynamic |
| Life defined as | 50% brightness | — |
| Constant brightness mode | Yes | — |
| Cool-down time | — | 90 s |
| Optics | ||
| Throw ratio | 0.25–0.35:1 | 1.5–1.66:1 |
| Image size | 60–150 in | 33–300 in |
| Projection offset | — | 105% |
| Zoom | Digital | Optical |
| Zoom ratio | — | 1.11×Derived |
| Focal length | 3.7 mm | 15.84–17.42 mm |
| Aperture (f-number) | 1.6 | 1.98–2.02 |
| Focus | Manual | Manual |
| Autofocus | — | No |
| Vertical keystone | 3° | 40° |
| Horizontal keystone | 3° | 40° |
| Grid warp | Yes | Yes |
| Motion & gaming | ||
| Max input refresh | — | 1080p: 240 Hz |
| Max refresh at 1080p | — | 240 HzDerived |
| Input lag | — | 1080p: 60 Hz 16.7 ms · 120 Hz 8.9 ms · 240 Hz 4.5 ms · 4K UHD: 60 Hz 16.7 ms |
| Lowest input lag | — | 4.5 msDerived |
| Input lag at 4K 60 Hz | — | 16.7 msDerived |
| Inputs & control | ||
| HDMI inputs | 3 × HDMI | 2 × HDMI 2.0 (HDCP 2.2) |
| HDMI inputs (count) | 3Derived | 2Derived |
| Newest HDMI version | — | HDMI 2.0Derived |
| Other video inputs | VGA, Composite | — |
| Max input resolution | DCI 4K | DCI 4K |
| Audio inputs | 3.5 mm | — |
| USB media playback | Yes | — |
| Control ports | RS-232 | RS-232, + 12 V trigger |
| Control-system drivers | Control4, Crestron, AMX | — |
| Horizontal scan | — | 31–135 kHz |
| Vertical scan | — | 24–120 Hz |
| Smart platform | ||
| Wi-Fi | Wi-Fi 5 | — |
| Ethernet | Yes | — |
| Casting | Miracast | — |
| Audio | ||
| Speaker power | 16 W | 10 W |
| Speakers | — | 1 |
| Layout | Mono | — |
| Audio outputs | 3.5 mm | 3.5 mm |
| HDMI audio return | NoneDerived | NoneDerived |
| Physical & installation | ||
| Dimensions (W × D × H) | 356 × 395 × 133 mm | 315 × 270 × 115 mm |
| Weight | 5,900 g | 4,200 g |
| Colours | White | — |
| Orientations | Table, Ceiling, Rear | Table, Ceiling, Rear |
| Dust filter | Replaceable | — |
| Environment & power | ||
| Operating temperature | 0–40°C | 5–40°C |
| Operating humidity | 20–80%RH | 10–85%RH |
| Altitude | 3,048 m · high-altitude mode | 3,000 m · high-altitude mode |
| Power draw | Normal 277 W · Eco 208 W | Max 305 W · Eco 220 W |
| Standby | 0.5 W | 0.5 W |
| Networked standby | 2 W | — |
| Mains input | 100–240 V · 50/60 Hz | 100–240 V · 50/60 Hz |
| Noise | ||
| Fan noise | Normal 37 dB(A) · Eco 27 dB(A) | Max 28 dB(A) · Normal 26 dB(A) |
| Safety & compliance | ||
| Laser class | Class 1 | — |
| Risk group | RG2 | RG2 |
| FDA laser notice | Notice 57 | — |
| Marks | FCC | FCC |
| Support & ownership | ||
| Warranty | 🇺🇸 US 3 yr or 20,000 h · 🇪🇺 EU 5 yr or 12,000 h | — |
| User manual | https://files.support.epson.com/docid/cpd6/cpd63099.pdf | https://region-resource.optoma.com/products/import/Documents/13cdc4ab-4017-4930-a4fd-d023d407c4fe.pdf |
| Spare parts | Air filter ELPAF60 · Mount ELPMB62 | — |
| In the box | ||
| In the box | Power cord, Remote, Remote batteries, + Quick start guide | Power cord, Remote, Remote batteries, + User manual |
| Remote | — | Backlit |