BenQ LH830ST vs Optoma EH412ST
 BenQ LH830STMSRP $1,999 |  $930 | |
|---|---|---|
| Key differences | ||
| Throw ratio | 0.5:1 | 0.5:1 |
| Lowest input lag | 16.7 msDerived | 8.4 msDerived |
| HDR formats | HDR10, + HLG | HDR10 |
| Light source | Laser (phosphor) | Lamp |
| Fan noise | Normal 30 dB(A) · Eco 24 dB(A) | Max 28 dB(A) · Normal 26 dB(A) |
| Price | MSRP $1,999 | $930 |
| Room fit | ||
| Distance to screen | 1.1 m | 1.1 m |
| Brightness | ||
| Rated brightness | 4,000 lmDerived | 4,000 lmDerived |
| White light outputANSI | 4,000 lm ANSI | 4,000 lm ANSI |
| Brightness uniformity | — | 70% |
| 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 | 50,000:1 |
| Colour | ||
| Colour gamut | Rec. 709 93% coverage | — |
| Colour bit depth (per channel) | 10 bit | 10 bit |
| HDR | ||
| HDR formats | HDR10, + HLG | HDR10 |
| Calibration | ||
| Colour management (CMS) | — | 6-axis |
| Picture certifications | — | ISF |
| 3D | ||
| 3D | — | Yes |
| 3D formats | — | Frame packing, Side-by-side, Top-bottom |
| 3D glasses sync | — | DLP-Link |
| Light source | ||
| Light source | Laser (phosphor) | Lamp |
| Lamp power | — | 240 W |
| Light-source life | 20,000 h normal · 30,000 h eco | 4,000 h max · 10,000 h eco · 15,000 h super eco · 12,000 h dynamic |
| Optics | ||
| Throw ratio | 0.5:1 | 0.5:1 |
| Image size | 70–300 in | 36–308 in |
| Projection offset | 116% | 116% |
| Zoom | None | Digital |
| Focal length | 17.51 mm | 7.42 mm |
| Aperture (f-number) | 2.8 | 2.8 |
| Focus | — | Manual |
| Autofocus | — | No |
| Vertical keystone | 30° | 40° |
| Horizontal keystone | 30° | — |
| Auto keystone | Yes | — |
| Corner correction | 4-corner | — |
| Interchangeable lens | — | No |
| Motion & gaming | ||
| Max input refresh | — | 1080p: 120 Hz |
| Max refresh at 1080p | — | 120 HzDerived |
| Input lag | 1080p: 60 Hz 16.7 ms | 1080p: 60 Hz 16 ms · 120 Hz 8.4 ms |
| Lowest input lag | 16.7 msDerived | 8.4 msDerived |
| Inputs & control | ||
| HDMI inputs | 2 × HDMI 2.0 (HDCP 2.2) | HDMI 2.0 (HDCP 2.2) · HDMI 1.4 (HDCP 2.2) |
| HDMI inputs (count) | 2Derived | 2Derived |
| Newest HDMI version | HDMI 2.0Derived | HDMI 2.0Derived |
| Other video inputs | — | VGA |
| Max input resolution | 4K UHD | 4K UHD |
| Audio inputs | — | 3.5 mm |
| Control ports | RS-232 | RS-232 |
| Horizontal scan | 15–135 kHz | 15.38–91.15 kHz |
| Vertical scan | 23–120 Hz | 50–85 Hz |
| Smart platform | ||
| Ethernet | Yes | — |
| Audio | ||
| Speaker power | 15 W | 10 W |
| Speakers | 1 | 1 |
| Audio outputs | 3.5 mm | 3.5 mm |
| HDMI audio return | NoneDerived | NoneDerived |
| Physical & installation | ||
| Dimensions (W × D × H) | 279 × 229 × 121 mm | 316 × 244 × 115 mm |
| Weight | 3,400 g | 3,000 g |
| Colours | — | White |
| Orientations | Table, Ceiling, Rear | Table, Ceiling, Rear |
| Ceiling mount | M4 | — |
| Ingress protection | IP6X (light engine) | — |
| Sealed optical engine | Yes | — |
| Environment & power | ||
| Operating temperature | 0–40°C | 5–40°C |
| Operating humidity | 10–80%RH | 10–85%RH |
| Altitude | 3,000 m · high-altitude mode | 3,000 m · high-altitude mode |
| Power draw | Max 250 W · Normal 230 W · Eco 130 W | Max 285 W · Normal 230 W · Eco 190 W |
| Standby | Up to 0.5 W | 0.5 W |
| Networked standby | Up to 2 W | — |
| Mains input | 100–240 V · 50/60 Hz | 100–240 V · 50/60 Hz |
| Noise | ||
| Fan noise | Normal 30 dB(A) · Eco 24 dB(A) | Max 28 dB(A) · Normal 26 dB(A) |
| Safety & compliance | ||
| Laser class | Class 1 | — |
| Risk group | RG2 | RG2 |
| Marks | — | FCC |
| Support & ownership | ||
| Warranty | 3 yr | 2 yr (light source 3 mo) |
| User manual | https://esupportdownload.benq.com/esupport/PROJECTOR%20FOR%20BUSINESS/UserManual/LH830ST/UM_EN_251023092502.pdf | https://www.optomausa.com/ContentStorage/Documents/2aef4a4a-ad89-4d77-8b8a-d395179d3957.pdf |
| In the box | ||
| In the box | Power cord, + Power adapter, Remote, Remote batteries, Quick start guide, + Warranty card | Power cord, Remote, Remote batteries, Quick start guide |
| Remote | — | IR |