ViewSonic LS900WU vs ViewSonic LS921WU
 MSRP $3,953 | MSRP $4,499 | |
|---|---|---|
| Key differences | ||
| Throw ratio | 1.2–1.9:1 | 0.81–0.89:1 |
| HDR formats | — | HLG |
| Fan noise | — | Normal 36 dB(A) · Eco 29 dB(A) |
| Price | MSRP $3,953 | MSRP $4,499 |
| Room fit | ||
| Distance to screen | 2.6–4.1 m | 1.7–1.9 m |
| Brightness | ||
| Rated brightness | 6,000 lmDerived | 6,000 lmDerived |
| White light outputANSI | 6,000 lm ANSI | 6,000 lm ANSI |
| Display system | ||
| Imaging technology | DLP | DLP |
| On-screen resolution | WUXGA (1920 × 1200)Derived | WUXGA (1920 × 1200)Derived |
| Native resolution | WUXGA (1920 × 1200) | WUXGA (1920 × 1200) |
| Native aspect | 16:10Derived | 16:10Derived |
| Contrast | ||
| Dynamic contrast | 100,000:1 | 3,000,000:1 |
| Colour | ||
| Colour bit depth (per channel) | 10 bit | 10 bit |
| HDR | ||
| HDR formats | — | HLG |
| 3D | ||
| 3D | Yes | Yes |
| 3D formats | Side-by-side, Top-bottom, Frame sequential | Side-by-side, Top-bottom, Frame sequential |
| Light source | ||
| Light source | Laser (phosphor) | Laser (phosphor) |
| Emitter | Blue laser + phosphor | Blue laser + phosphor |
| Light-source life | 20,000 h normal · 30,000 h dynamic | 20,000 h |
| Optics | ||
| Throw ratio | 1.2–1.9:1 | 0.81–0.89:1 |
| Image size | 50–300 in | 30–300 in |
| Zoom | Optical | Optical |
| Zoom ratio | 1.58×Derived | 1.1×Derived |
| Focus | — | Manual |
| Vertical lens shift | -2.4–9.2% | ±50% |
| Horizontal lens shift | ±2.5% | ±50% |
| Vertical keystone | 25° | 40° |
| Horizontal keystone | 30° | 40° |
| Corner correction | 4-corner | 4-corner |
| Inputs & control | ||
| HDMI inputs | 3 × HDMI 1.4 | 2 × HDMI 2.0 (HDCP 2.2) |
| HDMI inputs (count) | 3Derived | 2Derived |
| Newest HDMI version | HDMI 1.4Derived | HDMI 2.0Derived |
| Other video inputs | VGA, Composite, HDBaseT | VGA, Composite, HDBaseT |
| Max input resolution | WUXGA | 4K UHD |
| Audio inputs | 3.5 mm, RCA | 3.5 mm, RCA |
| Control ports | RS-232 | RS-232, + 12 V trigger |
| Control-system drivers | Crestron, AMX | Crestron, AMX |
| Horizontal scan | 15–102 kHz | 15–135 kHz |
| Vertical scan | 23–120 Hz | 23–120 Hz |
| Smart platform | ||
| Ethernet | — | Yes |
| Audio | ||
| Speaker power | 10 W | 20 W |
| Speakers | 2 | 2 |
| Audio outputs | 3.5 mm | 3.5 mm |
| HDMI audio return | NoneDerived | NoneDerived |
| Physical & installation | ||
| Dimensions (W × D × H) | 360 × 440 × 161 mm | 405 × 305 × 144 mm |
| Weight | 11,000 g | 6,500 g |
| Orientations | Portrait, 360° | + Table, + Ceiling, + Rear, Portrait, 360° |
| Ceiling mount | M4, screws ≤ 12 mm | M4, 12.8–15.8 mm screws |
| Environment & power | ||
| Operating temperature | 0–40°C | 0–40°C |
| Operating humidity | 10–90%RH | 10–90%RH |
| Altitude | 3,000 m | 3,000 m |
| Power draw | 430 W | 450 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 36 dB(A) · Eco 29 dB(A) |
| Safety & compliance | ||
| Laser class | Class 1 (US: Class 3R) | — |
| Risk group | RG2 | RG2 |
| FDA laser notice | Notice 50 | — |
| Marks | FCC, + UL | FCC |
| Support & ownership | ||
| Warranty | 5 yr or 20,000 h (light source 5 yr or 20,000 h) | 5 yr (light source 1 yr) |
| User manual | https://www.viewsonicglobal.com/public/products_download/user_guide/Projector/LS900WU/LS900WU_UG_ENG.pdf | https://www.viewsonicglobal.com/public/products_download/user_guide/Projector/LS920WU_LS921WU/LS920WU_LS921WU_UG_ENG.pdf |
| In the box | ||
| In the box | Power cord, Remote, Quick start guide, + VGA cable | Power cord, Remote, Quick start guide |