Epson Pro EX9270 vs Optoma ZK431ST
 Epson Pro EX9270$999.99 |  | |
|---|---|---|
| Key differences | ||
| White light output | 4,100 lm ISO | — |
| Native resolution | 1080p (1920 × 1080) | — |
| Throw ratio | 1.3–2.09:1 | 0.5:1 |
| Lowest input lag | — | 8.6 msDerived |
| Light source | Lamp | Laser (phosphor) |
| Fan noise | Normal 37 dB(A) · Eco 28 dB(A) | Normal 35 dB(A) · Eco 29 dB(A) |
| Price | $999.99 | — |
| Room fit | ||
| Distance to screen | 2.9–4.6 m | 1.1 m |
| Brightness | ||
| Rated brightness | 4,100 lmDerived | — |
| White light output | 4,100 lm ISO | — |
| Colour light output | 4,100 lm | — |
| Claimed brightness (non-standard) | — | 4,100 lm |
| Brightness uniformity | — | 75% |
| Display system | ||
| Imaging technology | 3LCD | DLP |
| Chip / panel diagonal | 0.62 in | — |
| On-screen resolution | 1080p (1920 × 1080)Derived | 4K UHD (3840 × 2160)Derived |
| Native resolution | 1080p (1920 × 1080) | — |
| Native aspect | 16:9Derived | 16:9Derived |
| Addressable resolution | — | 4K UHD (3840 × 2160) |
| Contrast | ||
| Dynamic contrast | Up to 16,000:1 | 2,000,000:1 |
| Dynamic contrast method | Dynamic iris | — |
| Colour | ||
| Colour bit depth (per channel) | 10 bit | — |
| Gamma / EOTF presets | — | 2.2, 2.4 |
| 3D | ||
| 3D | — | Yes |
| 3D formats | — | Frame packing, Side-by-side, Top-bottom |
| 3D glasses sync | — | DLP-Link |
| Light source | ||
| Light source | Lamp | Laser (phosphor) |
| Lamp power | 230 W | — |
| Replacement lamp | ELPLP97 | — |
| Light-source life | 5,500 h normal · 12,000 h eco | 30,000 h eco |
| Cool-down time | 0 s | — |
| Optics | ||
| Throw ratio | 1.3–2.09:1 | 0.5:1 |
| Image size | 31–304 in | 30–300 in |
| Projection offset | — | 114% |
| Zoom | Optical | None |
| Zoom ratio | 1.61×Derived | — |
| Focal length | 18.2–29.2 mm | 7.51 mm |
| Aperture (f-number) | 1.51–1.77 | 2.8 |
| Focus | Manual | Manual |
| Autofocus | No | — |
| Vertical lens shift | None | — |
| Horizontal lens shift | None | — |
| Vertical keystone | 30° | 15° |
| Horizontal keystone | 30° | 15° |
| Auto keystone | Yes | — |
| Corner correction | 4-corner | 4-corner |
| Grid warp | — | Yes |
| Motion & gaming | ||
| Input lag | — | 1080p: 60 Hz 16.7 ms · 120 Hz 8.6 ms · 4K UHD: 60 Hz 16.7 ms |
| Lowest input lag | — | 8.6 msDerived |
| Input lag at 4K 60 Hz | — | 16.7 msDerived |
| Inputs & control | ||
| HDMI inputs | 2 × HDMI | 2 × HDMI 2.0 |
| HDMI inputs (count) | 2Derived | 2Derived |
| Newest HDMI version | — | HDMI 2.0Derived |
| Max input resolution | WUXGA | 4K UHD |
| USB media playback | Yes | — |
| Control ports | — | RS-232, 12 V trigger |
| Horizontal scan | — | 15–150 kHz |
| Vertical scan | — | 24–240 Hz |
| Smart platform | ||
| Ethernet | — | Yes |
| Casting | AirPlay 2, Miracast | — |
| Smart home | HomeKit | — |
| Audio | ||
| Speaker power | 16 W | 15 W |
| Speakers | 1 | 1 |
| Layout | Mono | — |
| Audio outputs | 3.5 mm | 3.5 mm |
| HDMI audio return | NoneDerived | NoneDerived |
| Physical & installation | ||
| Dimensions (W × D × H) | 309 × 282 × 90 mm | 274 × 216 × 109 mm |
| Weight | 3,100 g | 2,900 g |
| Orientations | + Table, + Ceiling, + Rear | + 360° |
| Ceiling mount | — | M4, screws ≥ 10 mm |
| Dust filter | Replaceable | — |
| Environment & power | ||
| Operating temperature | 5–35°C | 0–40°C |
| Altitude | 3,048 m · high-altitude mode | 3,048 m |
| Power draw | Normal 349 W · Eco 187 W | Max 178 W · Eco 125 W |
| Standby | 0.3 W | Up to 0.5 W |
| Power supply | — | External adapter |
| Mains input | 100–240 V · 50/60 Hz | 100–240 V · 50/60 Hz |
| DC input | — | 19.5 V |
| Noise | ||
| Fan noise | Normal 37 dB(A) · Eco 28 dB(A) | Normal 35 dB(A) · Eco 29 dB(A) |
| Safety & compliance | ||
| Laser class | — | Class 1 |
| Risk group | RG2 | RG2 |
| Hazard distance | — | 1 m |
| FDA laser notice | — | Notice 57 |
| Marks | — | FCC |
| Support & ownership | ||
| Warranty | 1 yr (light source 3 mo) | 5 yr |
| User manual | https://download2.ebz.epson.net/sec_pubs_visual/eai/projectors/pdf/useg/EN/UsersGuide_EX9270_EN_EAI.pdf | — |
| In the box | ||
| In the box | Power cord, Remote, Remote batteries, Quick start guide | Power cord, Remote, Remote batteries, Quick start guide |