ViewSonic LS750WU vs ViewSonic LS751HD
 MSRP $2,565 |  ViewSonic LS751HDMSRP $1,599 | |
|---|---|---|
| Key differences | ||
| Native resolution | WUXGA (1920 × 1200) | 1080p (1920 × 1080) |
| Throw ratio | 1.13–1.47:1 | 1.4–2.24:1 |
| Fan noise | — | Normal 32 dB(A) · Eco 29 dB(A) |
| Price | MSRP $2,565 | MSRP $1,599 |
| Room fit | ||
| Distance to screen | 2.4–3.2 m | 3.1–5.0 m |
| Brightness | ||
| Rated brightness | 5,000 lmDerived | 5,000 lmDerived |
| White light outputANSI | 5,000 lm ANSI | 5,000 lm ANSI |
| Claimed brightness (non-standard) | — | 5,500 lm |
| Display system | ||
| Imaging technology | DLP | DLP |
| Chip / panel diagonal | — | 0.65 in |
| On-screen resolution | WUXGA (1920 × 1200)Derived | 1080p (1920 × 1080)Derived |
| Native resolution | WUXGA (1920 × 1200) | 1080p (1920 × 1080) |
| Native aspect | 16:10Derived | 16:9Derived |
| Contrast | ||
| Dynamic contrast | 3,000,000:1 | 3,000,000:1 |
| Dynamic contrast method | Light-source dimming | — |
| Colour | ||
| Colour bit depth (per channel) | 10 bit | 10 bit |
| Calibration | ||
| Picture mode memories | 2 | — |
| 3D | ||
| 3D | Yes | Yes |
| 3D formats | Side-by-side, Top-bottom, Frame sequential | — |
| 3D glasses sync | — | DLP-Link |
| Light source | ||
| Light source | Laser (phosphor) | Laser (phosphor) |
| Emitter | Blue laser + phosphor | Blue laser + phosphor |
| Light-source life | 20,000 h normal · 20,000 h dynamic | 20,000 h normal · 30,000 h super eco |
| Optics | ||
| Throw ratio | 1.13–1.47:1 | 1.4–2.24:1 |
| Image size | 30–300 in | 30–300 in |
| Projection offset | — | 136% |
| Zoom | Optical | Optical |
| Zoom ratio | 1.3×Derived | 1.6×Derived |
| Focal length | — | 20.91–32.62 mm |
| Aperture (f-number) | — | 2.5–3.26 |
| Focus | Manual | Manual |
| Vertical lens shift | None | -18–0% |
| Horizontal lens shift | None | — |
| Vertical keystone | 40° | 30° |
| Horizontal keystone | 40° | 30° |
| Corner correction | 4-corner | — |
| Interchangeable lens | No | — |
| Inputs & control | ||
| HDMI inputs | 2 × HDMI 1.4 (HDCP 1.4) | HDMI 2.0 (HDCP 2.2) · HDMI 1.4 (HDCP 1.4) |
| HDMI inputs (count) | 2Derived | 2Derived |
| Newest HDMI version | HDMI 1.4Derived | HDMI 2.0Derived |
| Other video inputs | VGA, Composite | — |
| Max input resolution | WUXGA | 4K UHD |
| Audio inputs | 3.5 mm, RCA | — |
| Control ports | RS-232, + 12 V trigger | RS-232 |
| Control-system drivers | + Control4, Crestron, + AMX | Crestron |
| Horizontal scan | 15–102 kHz | 15–102 kHz |
| Vertical scan | 23–120 Hz | 23–120 Hz |
| Smart platform | ||
| Ethernet | Yes | Yes |
| Audio | ||
| Speaker power | 20 W | — |
| Speakers | 2 | — |
| Audio outputs | 3.5 mm | 3.5 mm |
| HDMI audio return | NoneDerived | NoneDerived |
| Physical & installation | ||
| Dimensions (W × D × H) | 405 × 305 × 144 mm | 337 × 265 × 132 mm |
| Weight | 5,900 g | 4,500 g |
| Orientations | Table, Ceiling, Rear, 360° | Table, Ceiling, Rear, + Portrait, 360° |
| Ceiling mount | M4, 12.8–15.8 mm screws | — |
| Ingress protection | — | IP5X (light engine) |
| Sealed optical engine | — | Yes |
| Environment & power | ||
| Operating temperature | 0–40°C | 0–40°C |
| Operating humidity | 10–90%RH | 10–80%RH |
| Altitude | 3,000 m · high-altitude mode | 3,658 m |
| Power draw | 460 W | 245 W |
| Standby | Up to 0.5 W | Up to 0.5 W |
| Mains input | 100–240 V · 50/60 Hz | 100–240 V · 50/60 Hz |
| Noise | ||
| Fan noise | — | Normal 32 dB(A) · Eco 29 dB(A) |
| Safety & compliance | ||
| Laser class | Class 1 | — |
| Marks | FCC | FCC |
| Support & ownership | ||
| Warranty | 5 yr or 20,000 h | 3 yr |
| User manual | https://www.viewsonicglobal.com/public/products_download/user_guide/Projector/LS750WU_LS850WU_LS860WU/LS750WU_LS850WU_LS860WU_UG_ENG.pdf | https://www.viewsonicglobal.com/public/products_download/user_guide/projector/LS751HD/LS710HD_LS751HD_UG_ENG.pdf |
| In the box | ||
| In the box | Power cord, Remote, + Remote batteries, Quick start guide, + VGA cable | Power cord, Remote, Quick start guide |
| Remote | IR | IR |