ViewSonic LS751HD vs ViewSonic PG800HD
 ViewSonic LS751HDMSRP $1,599 |  MSRP $1,449 | |
|---|---|---|
| Key differences | ||
| Throw ratio | 1.4–2.24:1 | 1.15–1.5:1 |
| Light source | Laser (phosphor) | Lamp |
| Fan noise | Normal 32 dB(A) · Eco 29 dB(A) | — |
| Price | MSRP $1,599 | MSRP $1,449 |
| Room fit | ||
| Distance to screen | 3.1–5.0 m | 2.5–3.3 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 | 0.65 in |
| On-screen resolution | 1080p (1920 × 1080)Derived | 1080p (1920 × 1080)Derived |
| Native resolution | 1080p (1920 × 1080) | 1080p (1920 × 1080) |
| Native aspect | 16:9Derived | 16:9Derived |
| Colour wheel segments | — | 6 |
| Contrast | ||
| Dynamic contrast | 3,000,000:1 | 5,000:1 |
| Colour | ||
| Colour bit depth (per channel) | 10 bit | 10 bit |
| 3D | ||
| 3D | Yes | Yes |
| 3D formats | — | Frame packing, Side-by-side, Top-bottom, Frame sequential |
| 3D glasses sync | DLP-Link | — |
| Light source | ||
| Light source | Laser (phosphor) | Lamp |
| Emitter | Blue laser + phosphor | — |
| Lamp power | — | 370 W |
| Replacement lamp | — | RLC-103 |
| Light-source life | 20,000 h normal · 30,000 h super eco | 2,000 h normal · 2,500 h dynamic |
| Optics | ||
| Throw ratio | 1.4–2.24:1 | 1.15–1.5:1 |
| Image size | 30–300 in | 30–300 in |
| Projection offset | 136% | — |
| Zoom | Optical | Optical |
| Zoom ratio | 1.6×Derived | 1.3×Derived |
| Focal length | 20.91–32.62 mm | — |
| Aperture (f-number) | 2.5–3.26 | — |
| Focus | Manual | Manual |
| Vertical lens shift | -18–0% | 0–7% |
| Vertical keystone | 30° | 40° |
| Horizontal keystone | 30° | — |
| Auto keystone | — | Yes |
| Motion & gaming | ||
| Max input refresh | — | 1080p: 60 Hz |
| Max refresh at 1080p | — | 60 HzDerived |
| Inputs & control | ||
| HDMI inputs | HDMI 2.0 (HDCP 2.2) · HDMI 1.4 (HDCP 1.4) | 2 × HDMI 1.4 |
| HDMI inputs (count) | 2Derived | 2Derived |
| Newest HDMI version | HDMI 2.0Derived | HDMI 1.4Derived |
| Other video inputs | — | VGA, Component, Composite |
| Max input resolution | 4K UHD | WUXGA |
| Audio inputs | — | 3.5 mm, RCA, Microphone |
| Control ports | RS-232 | RS-232, + 12 V trigger |
| Control-system drivers | Crestron | Crestron, + AMX |
| 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) | 337 × 265 × 132 mm | 470 × 316 × 140 mm |
| Weight | 4,500 g | 6,200 g |
| Orientations | Table, Ceiling, Rear, + Portrait, + 360° | Table, Ceiling, Rear |
| Ceiling mount | — | M4, screws ≤ 8 mm |
| Ingress protection | IP5X (light engine) | — |
| Sealed optical engine | Yes | — |
| Environment & power | ||
| Operating temperature | 0–40°C | 0–40°C |
| Operating humidity | 10–80%RH | 10–90%RH |
| Altitude | 3,658 m | 3,000 m · high-altitude mode |
| Power draw | 245 W | Max 574 W · Eco 469 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 | ||
| Marks | FCC | + CE, FCC |
| Support & ownership | ||
| Warranty | 3 yr | 3 yr (light source 1 yr) |
| User manual | https://www.viewsonicglobal.com/public/products_download/user_guide/projector/LS751HD/LS710HD_LS751HD_UG_ENG.pdf | https://www.viewsonicglobal.com/public/products_download/user_guide/Projector/PG800HD_PG800W_PG800X/PG800HD_PG800W_PG800X_UG_ENG.pdf |
| In the box | ||
| In the box | Power cord, Remote, Quick start guide | Power cord, Remote, + Remote batteries, Quick start guide, + VGA cable |
| Remote | IR | — |