Optoma ZH551 vs ViewSonic LS901-4K
Bold marks the better figure where both are stated to the same standard. “—” means the manufacturer doesn't state it.
| Optoma ZH551 | ViewSonic LS901-4K MSRP $3,699 | |
|---|---|---|
| Display system | ||
| Imaging technology | DLP | DLP |
| Technology brand | DLP | DLP |
| Number of imaging devices | 1 | 1 |
| Chip / panel model | S600 DMD (0.65-inch, 1080p) | — |
| Chip / panel diagonal | 0.65 in | 0.65 in |
| Native aspect ratio | 16:9 | 16:9 |
| Native resolution | 1920 × 1080 | — |
| Addressable resolution | — | 3840 × 2160 |
| Optics | ||
| Throw ratio | 1.4–2.24:1 | 1.2–2.04:1 |
| Projection distance table | 40″: 1.24–1.98 m · 50″: 1.55–2.48 m · 60″: 1.86–2.98 m · 70″: 2.17–3.47 m · 80″: 2.48–3.97 m · 90″: 2.79–4.46 m · 100″: 3.1–4.96 m · 120″: 3.72–5.95 m · 145″: 4.49–7.19 m · 160″: 4.96–7.93 m · 180″: 5.58–8.93 m | 30″: 0.8–1.36 m · 40″: 1.06–1.81 m · 50″: 1.33–2.26 m · 60″: 1.59–2.71 m · 70″: 1.86–3.16 m · 80″: 2.13–3.61 m · 90″: 2.39–4.07 m · 100″: 2.66–4.52 m · 110″: 2.92–4.97 m · 120″: 3.19–5.42 m · 130″: 3.45–5.87 m · 140″: 3.72–6.32 m · 150″: 3.99–6.77 m · 200″: 5.31–9.03 m · 250″: 6.64–11.29 m · 300″: 7.97–13.55 m |
| Zoom type | Optical | Optical |
| Zoom ratio | 1.6× | 1.7× |
| Focus | Manual | Manual |
| Vertical lens shift | 103–118% | -21–0% |
| Motorized lens shift | No | — |
| Fixed offset | — | 154% |
| Focal length | 20.91–32.62 mm | 17.63–27.9 mm |
| F-number | 2.5–3.26 | 2.3–3 |
| Image size range | 28–145 in | 30–300 in |
| Vertical keystone | -30–30° | -30–30° |
| Horizontal keystone | -30–30° | -30–30° |
| Corner / warp correction | 4pt | Warp |
| Light source | ||
| Light source type | Laser (phosphor) | Laser (phosphor) |
| Light source detail | Laser | — |
| Light source life | Eco: 30,000 h | Normal: 20,000 h · Super eco: 30,000 h |
| Cool-down time | 90 s | — |
| Light-source dimming | — | Dynamic frame |
| Brightness | ||
| ISO light output | 5,600 lm | — |
| ANSI lumens | — | 5,500 lm |
| Claimed brightness (non-standard) | — | 6,000 |
| Claimed brightness unit | — | Unspecified |
| Brightness uniformity (centre-to-corner) | 75% | — |
| Contrast & black level | ||
| Dynamic contrast | 3,000,000:1 | 3,000,000:1 |
| Dynamic light control | — | Laser dimming |
| Colour | ||
| Bit depth / 'number of colours' | — | 30 bit |
| Calibration & picture control | ||
| Colour management system | 6-axis | — |
| HDR | ||
| HDR formats | HLG | HDR10, HLG |
| Motion & gaming | ||
| Max refresh rate | — | 1920×1080: 240 Hz · 2560×1440: 120 Hz · 3840×2160: 60 Hz |
| Input lag (rated) | 1920×1080 @ 60 Hz: 17 ms · 1920×1080 @ 120 Hz: 8.6 ms · 3840×2160 @ 60 Hz: 16.9 ms | — |
| Audio | ||
| Speaker power | 15 W | 30 W |
| Speaker count | — | 2 |
| Audio channels | Mono | — |
| Audio outputs | 3.5 mm | 3.5 mm |
| Inputs, control & connectivity | ||
| Max input signal | 3840 × 2160 | 3840 × 2160 |
| HDMI port count | 2 | 2 |
| HDMI ports (feature-level) | HDMI 1: HDMI 2.0; HDMI 2: HDMI 2.0 | HDMI 1: HDMI 2.0, HDCP 2.3; HDMI 2: HDMI 2.0, HDCP 2.3 |
| Horizontal scan frequency | 15.38–135 kHz | 15–255 kHz |
| Vertical scan frequency | 23.97–120 Hz | 23–240 Hz |
| VGA input | Yes | — |
| USB media playback | — | No |
| RS-232 | Yes | Yes |
| LAN control | Yes | Yes |
| 12 V trigger | Yes | — |
| PJLink class | Class 1 | — |
| Control ecosystem drivers | Crestron | Crestron |
| Ethernet | Yes | Yes |
| Firmware / software | ||
| Casting | Miracast | — |
| 3D | ||
| 3D support | Yes | Yes |
| 3D sync method | DLP-Link | DLP-Link |
| 3D formats | Side-by-side, Top-bottom, Frame sequential, Frame packing | Side-by-side, Top-bottom, Frame sequential |
| Acoustic noise | ||
| Fan noise (sound pressure) | Min: 28 dB(A) · Max: 33 dB(A) | Normal: 31 dB(A) · Eco: 25 dB(A) |
| Environment & power | ||
| Operating temperature | 0–40°C | 0–40°C |
| Operating humidity | — | 10–80%RH |
| Altitude / high-altitude mode | 3,048 m | 3,658 m |
| High-altitude mode | Yes | Yes |
| Operating orientations | Portrait, 360° | Table, Ceiling, Rear |
| Rated voltage | 100–240 V | 100–240 V |
| Rated frequency | 50–60 Hz | 50–60 Hz |
| Power consumption by mode | Eco: 200 W · Bright: 230 W | Normal: 245 W |
| Standby power | 0.5 W | 0.5 W |
| Physical & installation | ||
| Width | 274 mm | 337 mm |
| Depth | 216 mm | 280 mm |
| Height | 114 mm | 132 mm |
| Weight | 2.9 kg | 4.85 kg |
| Ingress protection | IP6X (optical engine) | — |
| Colours / finishes | — | White |
| Sealed optical engine | — | Yes |
| Air filter | — | None |
| Safety & compliance | ||
| Photobiological risk group | RG2 | RG2 |
| Hazard distance | 1 m | 1 m |
| Laser product class | Class 1 | Class 1 |
| Safety & market certifications | FCC | CE, FCC |
| Support & ownership | ||
| Warranty | 🇺🇸 US 3 yr | 🇺🇸 US 3 yr |
| Light-source warranty | 5 years or 12,000 hours | — |
| User manual | https://region-resource.optoma.com/products/documents/sj3ba9jjcgNo3jqZNW4eSSqXsUgO3XnIzHgAsT4w.pdf | https://www.viewsonicglobal.com/public/products_download/user_guide/projector/LS901HD_LS901-4K/LS901HD_LS901-4K_UG_ENG.pdf |
| In the box | ||
| Box contents | Power cord, Remote, Batteries, Wifi dongle, Quick start guide | Projector, Remote, Batteries, Quick start guide, Power cord |
| Remote type | IR | IR |