Optoma EH412ST vs ViewSonic PA503X
Bold marks the better figure where both are stated to the same standard. “—” means the manufacturer doesn't state it.
| Optoma EH412ST |  ViewSonic PA503X | |
|---|---|---|
| Display system | ||
| Imaging technology | DLP | DLP |
| Technology brand | DLP | — |
| Number of imaging devices | 1 | 1 |
| Chip / panel diagonal | 0.65 in | 0.55 in |
| Native aspect ratio | 16:9 | 4:3 |
| Native resolution | 1920 × 1080 | 1024 × 768 |
| Colour wheel segments | 6 segments: R, Y, G, C, W, B | 6 segments |
| Optics | ||
| Throw ratio | 0.5:1 | 1.96–2.15:1 |
| Projection distance table | 37″: 0.41 m · 40″: 0.44 m · 50″: 0.55 m · 60″: 0.66 m · 70″: 0.77 m · 80″: 0.88 m · 90″: 0.99 m · 100″: 1.1 m · 110″: 1.22 m · 120″: 1.33 m · 130″: 1.44 m · 140″: 1.55 m · 150″: 1.66 m · 160″: 1.77 m · 170″: 1.88 m · 180″: 1.99 m · 190″: 2.1 m · 200″: 2.21 m · 210″: 2.32 m · 220″: 2.43 m · 230″: 2.54 m · 240″: 2.65 m · 250″: 2.76 m · 260″: 2.87 m · 270″: 2.98 m · 280″: 3.09 m · 290″: 3.2 m · 300″: 3.31 m | 60″: 2.39–2.62 m · 70″: 2.78–3.06 m · 80″: 3.18–3.5 m · 90″: 3.58–3.94 m · 100″: 3.97–4.37 m · 110″: 4.37–4.81 m · 120″: 4.77–5.25 m · 130″: 5.17–5.68 m · 140″: 5.56–6.12 m · 150″: 5.96–6.56 m · 160″: 6.36–7 m · 170″: 6.76–7.43 m · 180″: 7.15–7.87 m |
| Zoom type | Digital | Optical |
| Zoom ratio | — | 1.1× |
| Focus | Manual | Manual |
| Fixed offset | 116% | 120% |
| Focal length | 7.42 mm | 22–24.1 mm |
| F-number | 2.8 | 2.56–2.68 |
| Interchangeable lens | No | — |
| Image size range | 36.2–308 in | 30–300 in |
| Vertical keystone | -40–40° | -40–40° |
| Light source | ||
| Light source type | Lamp | Lamp |
| Light source detail | — | 190W UHP Lamp |
| Lamp wattage | 240 W | 190 W |
| Light source life | Bright: 4,000 h · Dynamic: 12,000 h · Eco: 10,000 h · Eco plus: 15,000 h | Normal: 5,000 h · Supereco: 15,000 h |
| Light-source dimming | — | Manual steps |
| Brightness | ||
| ANSI lumens | 4,000 lm | 4,000 lm |
| Brightness uniformity (centre-to-corner) | 70% | — |
| Contrast & black level | ||
| Dynamic contrast | 50,000:1 | 22,000:1 |
| Colour | ||
| Bit depth / 'number of colours' | 30 bit | 30 bit |
| Calibration & picture control | ||
| Colour management system | 6-axis | 6-axis |
| ISF certified | Yes | — |
| HDR | ||
| HDR formats | HDR10 | — |
| Motion & gaming | ||
| Max refresh rate | 1920×1080: 120 Hz | — |
| Input lag (rated) | 1920×1080 @ 60 Hz: 16 ms · 1920×1080 @ 120 Hz: 8.4 ms | 1920×1080 @ 60 Hz: 16 ms |
| Audio | ||
| Speaker power | 10 W | 2 W |
| Speaker count | 1 | — |
| Audio outputs | 3.5 mm | 3.5 mm |
| Inputs, control & connectivity | ||
| Max input signal | 3840 × 2160 | 1920 × 1080 |
| HDMI port count | 2 | 1 |
| HDMI ports (feature-level) | HDMI 1: HDMI 2.0, HDCP 2.2; HDMI 2 / MHL: HDMI 1.4, HDCP 2.2 | HDMI: HDMI 1.4, HDCP 1.4 |
| Audio input terminals | 3.5 mm | 3.5 mm |
| Horizontal scan frequency | 15.38–91.15 kHz | 15–102 kHz |
| Vertical scan frequency | 50–85 Hz | 23–120 Hz |
| VGA input | Yes | Yes |
| RS-232 | Yes | Yes |
| LAN control | — | No |
| Wired IR input | — | Yes |
| Ethernet | — | No |
| 3D | ||
| 3D support | Yes | Yes |
| 3D sync method | DLP-Link | — |
| 3D formats | Frame packing, Side-by-side, Top-bottom | Frame packing, Side-by-side, Top-bottom, Frame sequential |
| Acoustic noise | ||
| Fan noise (sound pressure) | Typical: 26 dB(A) · Max: 28 dB(A) | Normal: 31 dB(A) · Eco: 27 dB(A) |
| Environment & power | ||
| Operating temperature | 5–40°C | 0–40°C |
| Operating humidity | 10–85%RH | 10–90%RH |
| Altitude / high-altitude mode | 3,000 m | 3,000 m |
| High-altitude mode | Yes | Yes |
| Operating orientations | Table, Ceiling, Rear | Table, Ceiling, Rear |
| Rated voltage | 100–240 V | 100–240 V |
| Rated frequency | 50–60 Hz | 50–60 Hz |
| Power consumption (max) | 285 W | 280 W |
| Power consumption by mode | Bright typical: 230 W · Bright max: 253 W · Eco typical: 190 W · Eco max: 209 W | Normal: 260 W |
| Standby power | 0.5 W | 0.5 W |
| Physical & installation | ||
| Width | 316 mm | 294 mm |
| Depth | 244 mm | 218 mm |
| Height | 115 mm | 110 mm |
| Weight | 3 kg | 2.2 kg |
| Colours / finishes | White | — |
| Safety & compliance | ||
| Photobiological risk group | RG2 | RG2 |
| Safety & market certifications | FCC | CE, FCC |
| Support & ownership | ||
| Warranty | 🇺🇸 US 2 yr | 🇺🇸 US 3 yr |
| Light-source warranty | 90 days | Lamps bought separately as accessories: 90 days |
| User manual | https://www.optomausa.com/ContentStorage/Documents/2aef4a4a-ad89-4d77-8b8a-d395179d3957.pdf | https://www.viewsonicglobal.com/public/products_download/user_guide/Projector/PA500_PA503%20Series/PA500S_PA503S_SP3_PA500X_PA503X_SP6_PA503W_PA503SP_PA503XP_UG_ENG.pdf |
| Spares availability | — | Replacement lamp RLC-108, air filter RSPL and wall/ceiling mount PJ-WMK-007 listed as optional accessories |
| In the box | ||
| Box contents | Projector, Power cord, Remote, Batteries, Quick start guide | Projector, Power cord, Quick start guide, Remote, Batteries, Vga cable |
| Remote type | IR | IR |