BenQ AH30ST vs ViewSonic LSD400HD-ST
Bold marks the better figure where both are stated to the same standard. “—” means the manufacturer doesn't state it.
 BenQ AH30STMSRP $1,499 |  ViewSonic LSD400HD-STMSRP $1,099.99 | |
|---|---|---|
| Display system | ||
| Imaging technology | DLP | DLP |
| Technology brand | DLP | DLP |
| Number of imaging devices | 1 | 1 |
| Chip / panel diagonal | — | 0.65 in |
| Native aspect ratio | 16:9 | — |
| Native resolution | 1920 × 1080 | 1920 × 1080 |
| Optics | ||
| Throw ratio | 0.69–0.83:1 | 0.49–0.5:1 |
| Throw reference point | Lens | — |
| Projection distance table | 60″: 0.92–1.1 m · 70″: 1.07–1.29 m · 80″: 1.22–1.47 m · 90″: 1.38–1.65 m · 100″: 1.53–1.84 m · 110″: 1.68–2.02 m · 120″: 1.83–2.21 m · 130″: 1.99–2.39 m · 140″: 2.14–2.57 m · 150″: 2.29–2.76 m · 160″: 2.44–2.94 m · 170″: 2.6–3.12 m · 180″: 2.75–3.31 m · 190″: 2.9–3.49 m · 200″: 3.06–3.68 m | 40″: 0.44 m · 50″: 0.55 m · 60″: 0.66 m · 70″: 0.77 m · 80″: 0.88 m · 90″: 0.99 m · 100″: 1.1 m · 110″: 1.21 m · 120″: 1.32 m · 130″: 1.43 m · 140″: 1.54 m · 150″: 1.65 m · 200″: 2.2 m · 250″: 2.75 m · 300″: 3.29 m |
| Zoom type | Optical | None |
| Zoom ratio | 1.2× | — |
| Focus | Manual | Manual |
| Vertical lens shift | 0% | — |
| Horizontal lens shift | 0% | — |
| Fixed offset | 103% | 132% |
| Focal length | 10.2–12.24 mm | 7.51 mm |
| F-number | 2.6–2.78 | 2.8 |
| Image size range | — | 40–300 in |
| Vertical keystone | -30–30° | -15–15° |
| Horizontal keystone | -30–30° | -15–15° |
| Corner / warp correction | 4pt | 4pt |
| Light source | ||
| Light source type | LED | Laser (phosphor) |
| Light source detail | 4LED | 3rd-generation laser phosphor |
| Light source life | Normal: 20,000 h · Eco: 30,000 h | Normal: 20,000 h · Eco: 30,000 h |
| Cool-down time | 2 s | — |
| Brightness | ||
| ANSI lumens | 3,000 lm | 4,000 lm |
| Claimed brightness (non-standard) | — | 4,800 |
| Claimed brightness unit | — | Unspecified |
| Contrast & black level | ||
| Dynamic contrast | 20,000:1 | 3,000,000:1 |
| Colour | ||
| Rec.709 gamut | 95% | — |
| Gamut metric | Coverage | — |
| Colour temperature presets | Native, Custom | — |
| Gamma / EOTF presets | 2.2, 2.4, 2.6 | — |
| Bit depth / 'number of colours' | 30 bit | 30 bit |
| Calibration & picture control | ||
| Colour management system | 6-axis | — |
| Picture mode memories | 2 | — |
| HDR | ||
| HDR formats | — | HDR10, HLG |
| Motion & gaming | ||
| Input lag (rated) | 1920×1080 @ 60 Hz: 16.7 ms | — |
| Audio | ||
| Speaker power | 10 W | 15 W |
| Speaker count | 1 | 1 |
| Audio channels | Mono | — |
| Audio outputs | 3.5 mm | 3.5 mm |
| Inputs, control & connectivity | ||
| Max input signal | 1920 × 1200 | 3840 × 2160 |
| HDMI port count | 2 | 2 |
| HDMI ports (feature-level) | HDMI-1: HDMI 1.4a, HDCP 1.4; HDMI-2: HDMI 1.4a, HDCP 1.4 | HDMI 1: HDMI 2.0, HDCP 2.2; HDMI 2: HDMI 2.0, HDCP 2.2 |
| Horizontal scan frequency | 15–135 kHz | 15–135 kHz |
| Vertical scan frequency | 23–120 Hz | 24–120 Hz |
| RS-232 | Yes | Yes |
| LAN control | — | Yes |
| Control ecosystem drivers | — | Crestron |
| Ethernet | — | Yes |
| 3D | ||
| 3D support | Yes | Yes |
| 3D sync method | — | DLP-Link |
| 3D formats | Top-bottom, Frame sequential, Frame packing, Side-by-side | Frame packing, Side-by-side, Top-bottom |
| Setup automation | ||
| Auto keystone | Yes | — |
| Acoustic noise | ||
| Fan noise (sound pressure) | Typical: 32 dB(A) · Eco: 28 dB(A) | Normal: 32 dB(A) · Eco: 27 dB(A) |
| Environment & power | ||
| Operating temperature | 0–40°C | 0–40°C |
| Operating humidity | 10–90%RH | 10–80%RH |
| Altitude / high-altitude mode | 3,000 m | 3,658 m |
| High-altitude mode | Yes | Yes |
| Operating orientations | Table, Ceiling, Rear | Table, Ceiling, Rear, Portrait, 360° |
| Rated voltage | 100–240 V | 100–240 V |
| Rated frequency | 50–60 Hz | 50–60 Hz |
| Power consumption (max) | 320 W | — |
| Power consumption by mode | Typical: 237 W | Normal: 143 W |
| Standby power | 0.5 W | 0.5 W |
| Power supply | — | External brick |
| Physical & installation | ||
| Width | 304 mm | 286 mm |
| Depth | 221 mm | 216 mm |
| Height | 107 mm | 129 mm |
| Weight | 2.65 kg | 3.1 kg |
| Ingress protection | — | IP6X |
| Mount hole pattern | Screw: M4 x 8 mm | — |
| Sealed optical engine | — | Yes |
| Air filter | None | None |
| Safety & compliance | ||
| Photobiological risk group | RG2 | RG2 |
| Laser product class | — | Class 1 |
| Safety & market certifications | — | CE, FCC |
| Support & ownership | ||
| Warranty | 🇺🇸 US 3 yr | 🇺🇸 US 3 yr |
| User manual | https://esupportdownload.benq.com/esupport/PROJECTOR%20FOR%20CONSUMER/UserManual/AH30ST/AH30ST_UM_EN_250702090900.pdf | https://www.viewsonicglobal.com/public/products_download/user_guide/projector/LSD400HD-ST/LSD400HD-ST_UG_ENG.pdf |
| In the box | ||
| Box contents | Remote control with batteries, Power cord, Quick start guide, Warranty card, Lens cover | Projector, Remote control, Batteries, Quick start guide, Power cord, Power adapter |
| Remote type | IR | IR |