ViewSonic LS740-4K vs ViewSonic LS740HD
Bold marks the better figure where both are stated to the same standard. “—” means the manufacturer doesn't state it.
 ViewSonic LS740-4KMSRP $1,799.99 |  ViewSonic LS740HDMSRP $1,099 | |
|---|---|---|
| Display system | ||
| Imaging technology | DLP | DLP |
| Technology brand | — | DLP |
| Number of imaging devices | 1 | 1 |
| Chip / panel diagonal | 0.65 in | 0.65 in |
| Native aspect ratio | 16:9 | 16:9 |
| Native resolution | 3840 × 2160 | 1920 × 1080 |
| Optics | ||
| Throw ratio | 1.4–2.24:1 | 1.13–1.47:1 |
| Throw reference point | Lens | — |
| Projection distance table | 30″: 0.93–1.49 m · 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 · 110″: 3.41–5.46 m · 120″: 3.72–5.95 m · 130″: 4.03–6.45 m · 140″: 4.34–6.94 m · 150″: 4.65–7.44 m · 200″: 6.2–9.92 m · 250″: 7.75–12.4 m · 300″: 9.3–14.88 m | 30″: 0.75–0.98 m · 40″: 1–1.3 m · 50″: 1.25–1.63 m · 60″: 1.5–1.95 m · 70″: 1.75–2.28 m · 80″: 2–2.6 m · 90″: 2.25–2.93 m · 100″: 2.5–3.25 m · 110″: 2.75–3.58 m · 120″: 3–3.91 m · 130″: 3.25–4.23 m · 140″: 3.5–4.56 m · 150″: 3.75–4.88 m · 200″: 5–6.51 m · 250″: 6.25–8.14 m · 300″: 7.51–9.76 m |
| Zoom type | Optical | Optical |
| Zoom ratio | 1.6× | 1.3× |
| Focus | Manual | Manual |
| Fixed offset | 124% | 132% |
| Focal length | — | 16.9–21.61 mm |
| F-number | — | 2.43–2.78 |
| Image size range | 30–300 in | 30–300 in |
| Vertical keystone | -30–30° | -30–30° |
| Horizontal keystone | -30–30° | -30–30° |
| Corner / warp correction | Warp | 4pt |
| Light source | ||
| Light source type | Laser (phosphor) | Laser (phosphor) |
| Light source detail | Laser Phosphor | Laser phosphor |
| Light source life | Normal: 20,000 h · Super eco: 30,000 h | Normal: 20,000 h · Eco: 30,000 h |
| Light-source dimming | — | Dynamic frame |
| Brightness | ||
| ANSI lumens | 5,000 lm | 5,000 lm |
| Claimed brightness (non-standard) | — | 5,500 |
| Claimed brightness unit | — | Peak lumens |
| Brightness by mode | — | Bright: 4,783 lm · Presentation: 3,861 lm · Cinema: 3,476 lm · Gaming: 3,328 lm · User: 3,985 lmMeasured |
| Contrast & black level | ||
| Dynamic contrast | 3,000,000:1 | 3,000,000:1 |
| Colour | ||
| Bit depth / 'number of colours' | 30 bit | 30 bit |
| Calibration & picture control | ||
| Colour management system | — | 6-axis |
| HDR | ||
| HDR formats | HLG | — |
| Motion & gaming | ||
| Max refresh rate | 1920×1080: 240 Hz · 2560×1440: 120 Hz · 3840×2160: 60 Hz | 1280×720: 120 Hz |
| Audio | ||
| Speaker power | 15 W | 15 W |
| Speaker count | 1 | 1 |
| Audio channels | — | Mono |
| Audio outputs | 3.5 mm | 3.5 mm |
| Inputs, control & connectivity | ||
| Max input signal | 3840 × 2160 | 1920 × 1200 |
| HDMI port count | 2 | 2 |
| HDMI ports (feature-level) | HDMI 1: HDMI 2.0, HDCP 2.3; HDMI 2: HDMI 2.0, HDCP 2.3 | HDMI 1: HDMI 1.4, HDCP 1.4; HDMI 2: HDMI 1.4, HDCP 1.4 |
| Horizontal scan frequency | 15–135 kHz | 15–102 kHz |
| Vertical scan frequency | 24–240 Hz | 24–120 Hz |
| RS-232 | Yes | Yes |
| LAN control | Yes | No |
| Wi-Fi | — | None |
| Ethernet | Yes | No |
| 3D | ||
| 3D support | Yes | Yes |
| 3D sync method | DLP-Link | DLP-Link |
| 3D formats | Frame packing, Side-by-side, Top-bottom, Frame sequential | Frame sequential, Frame packing, Side-by-side, Top-bottom |
| Acoustic noise | ||
| Fan noise (sound pressure) | Normal: 32 dB(A) · Eco: 27 dB(A) | Normal: 30 dB(A) · Eco: 24 dB(A) |
| Environment & power | ||
| Operating temperature | 0–40°C | 0–40°C |
| Operating humidity | 10–80%RH | 10–80%RH |
| Altitude / high-altitude mode | 3,658 m | 3,660 m |
| High-altitude mode | Yes | Yes |
| Operating orientations | Table, Ceiling, Portrait, 360° | Table, Ceiling, Rear, Portrait, 360° |
| Rated voltage | 100–240 V | 100–240 V |
| Rated frequency | 50–60 Hz | 50–60 Hz |
| Power consumption by mode | Typical: 165 W | Typical: 210 W |
| Standby power | 0.5 W | 0.5 W |
| Power supply | External brick | External brick |
| Physical & installation | ||
| Width | 286 mm | 286 mm |
| Depth | 216 mm | 216 mm |
| Height | 129 mm | 129 mm |
| Weight | 3.1 kg | 3 kg |
| Ingress protection | IP6X | IP6X (sealed light engine only) |
| Exhaust / intake direction | — | Side |
| Mount hole pattern | — | Thread: M4 · Max screw length mm: 8 · Holes: 3 · Hole spacing mm: 55–82.3 |
| Sealed optical engine | Yes | 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 | CE, FCC | FCC, CE |
| Support & ownership | ||
| Warranty | 🇺🇸 US 3 yr | 🇺🇸 US 3 yr |
| Light-source warranty | — | 1 year (original lamp/light source, Americas); 90 days under heavy usage over 14 hours a day |
| User manual | https://www.viewsonicglobal.com/public/products_download/user_guide/projector/LSD500-4K/LSD500-4K_LS740-4K_UG_ENG.pdf | https://www.viewsonicglobal.com/public/products_download/user_guide/projector/LS740W_LS740HD/LS740W_LS740HD_UG_ENG.pdf |
| In the box | ||
| Box contents | Projector, Power cord, Power adapter, Remote control, Batteries, Quick start guide | Projector, Remote, Batteries, Quick start guide, Power cord, Power adapter |
| Remote type | IR | IR |