InFocus IN1048SL vs Optoma ZH551
 $2,096.90 |  $1,499 | |
|---|---|---|
| Key differences | ||
| White light outputISO | 6,000 lm ISO | 5,600 lm ISO |
| Lowest input lag | β | 8.6 msDerived |
| HDR formats | β | HLG |
| Fan noise | Normal 30 dB(A) Β· Eco 28 dB(A) | Normal 33 dB(A) Β· Eco 28 dB(A) |
| Price | $2,096.90 | $1,499 |
| Room fit | ||
| Distance to screen | 3.1β5.0 m | 3.1β5.0 m |
| Brightness | ||
| Rated brightness | 6,000 lmDerived | 5,600 lmDerived |
| White light outputISO | 6,000 lm ISO | 5,600 lm ISO |
| Brightness uniformity | 85% | 75% |
| Display system | ||
| Imaging technology | DLP | DLP |
| Chip / panel diagonal | 0.65 in | 0.65 in |
| On-screen resolution | 1080p (1920 Γ 1080)Derived | 1080p (1920 Γ 1080)Derived |
| Native resolution | 1080p (1920 Γ 1080) | 1080p (1920 Γ 1080) |
| Native aspect | 16:9Derived | 16:9Derived |
| Contrast | ||
| Dynamic contrast | 2,000,000:1 | 3,000,000:1 |
| Colour | ||
| Colour bit depth (per channel) | 10 bit | β |
| Gamma / EOTF presets | 2.2, 2.4, 2.6 | β |
| HDR | ||
| HDR formats | β | HLG |
| Calibration | ||
| Colour management (CMS) | 6-axis | 6-axis |
| 3D | ||
| 3D | Yes | Yes |
| 3D formats | Side-by-side, Top-bottom, Frame sequential | + Frame packing, Side-by-side, Top-bottom, Frame sequential |
| 3D glasses sync | DLP-Link | DLP-Link |
| Light source | ||
| Light source | Laser (phosphor)Derived | Laser (phosphor) |
| Emitter | Blue laser + phosphor | β |
| Light engine | Quantum Laser | β |
| Light-source life | Up to 30,000 h | 30,000 h eco |
| Light output control | Steps | β |
| Cool-down time | β | 90 s |
| Optics | ||
| Throw ratio | 1.4β2.24:1 | 1.4β2.24:1 |
| Image size | 20β300 in | 28β145 in |
| Projection offset | 103% | 103% |
| Zoom | Optical | Optical |
| Zoom ratio | 1.6ΓDerived | 1.6ΓDerived |
| Focal length | 20.91β32.62 mm | 20.91β32.62 mm |
| Aperture (f-number) | β | 2.5β3.26 |
| Focus | Manual | Manual |
| Autofocus | No | No |
| Vertical lens shift | 0β15% | 0β15% |
| Motorised lens shift | No | No |
| Vertical keystone | 30Β° | 30Β° |
| Horizontal keystone | 30Β° | 30Β° |
| Auto keystone | Yes | β |
| Corner correction | 4-corner | 4-corner |
| Motion & gaming | ||
| Max input refresh | 1080p: 120 Hz Β· 4K UHD: 60 Hz | β |
| Max refresh at 1080p | 120 HzDerived | β |
| Max refresh at 4K | 60 HzDerived | β |
| Input lag | β | 1080p: 60 Hz 17 ms Β· 120 Hz 8.6 ms Β· 4K UHD: 60 Hz 16.9 ms |
| Lowest input lag | β | 8.6 msDerived |
| Input lag at 4K 60 Hz | β | 16.9 msDerived |
| Inputs & control | ||
| HDMI inputs | HDMI 2.0 Β· HDMI 1.4 | 2 Γ HDMI 2.0 |
| HDMI inputs (count) | 2Derived | 2Derived |
| Newest HDMI version | HDMI 2.0Derived | HDMI 2.0Derived |
| Other video inputs | VGA, + HDBaseT | VGA |
| Max input resolution | DCI 4K | 4K UHD |
| Control ports | RS-232 | RS-232, + 12 V trigger |
| PJLink | β | Class 1 |
| Control-system drivers | β | Crestron |
| Horizontal scan | 15.38β91.15 kHz | 15.38β135 kHz |
| Vertical scan | 24β120 Hz | 23.97β120 Hz |
| Smart platform | ||
| Ethernet | Yes | Yes |
| Casting | β | Miracast |
| Audio | ||
| Speaker power | 10 W | 15 W |
| Speakers | 1 | β |
| Layout | β | Mono |
| Audio outputs | 3.5 mm | 3.5 mm |
| HDMI audio return | NoneDerived | NoneDerived |
| Physical & installation | ||
| Dimensions (W Γ D Γ H) | 374 Γ 302 Γ 117 mm | 274 Γ 216 Γ 114 mm |
| Weight | 5,500 g | 2,900 g |
| Orientations | + Table, + Ceiling, + Rear | + Portrait, + 360Β° |
| Dust filter | None | β |
| Ingress protection | β | IP6X (light engine) |
| Environment & power | ||
| Operating temperature | 5β40Β°C | 0β40Β°C |
| Operating humidity | 10β85%RH | β |
| Altitude | 3,048 m Β· high-altitude mode | 3,048 m Β· high-altitude mode |
| Power draw | Max 341 W Β· Eco 190 W | Normal 230 W Β· Eco 200 W |
| Standby | Up to 0.5 W | Up to 0.5 W |
| Networked standby | Up to 2 W | β |
| Mains input | 100β240 V Β· 50/60 Hz | 100β240 V Β· 50/60 Hz |
| Noise | ||
| Fan noise | Normal 30 dB(A) Β· Eco 28 dB(A) | Normal 33 dB(A) Β· Eco 28 dB(A) |
| Safety & compliance | ||
| Laser class | Class 1 | Class 1 |
| Risk group | RG2 | RG2 |
| Hazard distance | β | 1 m |
| Marks | + CE, FCC, + CCC | FCC |
| Support & ownership | ||
| Warranty | 5 yr or 20,000 h | 3 yr (light source 5 yr or 12,000 h) |
| User manual | https://cdn.infocus.com/2026/06/UG_Authentic-I_IN1048SL_49SL_EN-v2.pdf | https://region-resource.optoma.com/products/documents/sj3ba9jjcgNo3jqZNW4eSSqXsUgO3XnIzHgAsT4w.pdf |
| In the box | ||
| In the box | Power cord, Remote, Quick start guide, + VGA cable, + Lens cap | Power cord, Remote, + Remote batteries, Quick start guide, + Wi-Fi dongle |
| Remote | IR | IR |