BenQ TH671ST vs Optoma UHZ58LV
Bold marks the better figure where both are stated to the same standard. “—” means the manufacturer doesn't state it.
 BenQ TH671STMSRP $749 |  Optoma UHZ58LVMSRP $2,299 | |
|---|---|---|
| Display system | ||
| Imaging technology | DLP | DLP |
| Technology brand | DLP | — |
| Number of imaging devices | 1 | — |
| Chip / panel model | DC3 DMD | — |
| Chip / panel diagonal | 0.65 in | — |
| Native aspect ratio | 16:9 | 16:9 |
| Native resolution | 1920 × 1080 | 1920 × 1080 |
| Pixel shift | — | XPR 4-way |
| Addressable resolution | — | 3840 × 2160 |
| Colour wheel segments | 6 segment (RGBYCW) | — |
| Colour wheel speed | 2× | — |
| Optics | ||
| Throw ratio | 0.69–0.83:1 | 1.4–2.24:1 |
| 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 · 140″: 2.14–2.57 m · 160″: 2.44–2.94 m · 180″: 2.75–3.31 m | 30″: 0.93–1.49 m · 40″: 1.24–1.98 m · 50″: 1.55–2.48 m · 60″: 1.86–2.98 m · 70″: 2.17–3.47 m · 80″: 2.48–3.97 m · 90″: 2.79–4.46 m · 100″: 3.1–4.96 m · 110″: 3.41–5.46 m · 120″: 3.72–5.95 m · 130″: 4.03–6.45 m · 140″: 4.34–6.94 m · 150″: 4.65–7.44 m · 200″: 6.2–9.92 m · 250″: 7.75–12.4 m · 300″: 9.3–14.88 m |
| Zoom type | Optical | Optical |
| Zoom ratio | 1.2× | 1.6× |
| Focus | Manual | Manual |
| Vertical lens shift | — | 103–118% |
| Motorized lens shift | — | No |
| Fixed offset | 103% | 118% |
| Focal length | 10.2–12.24 mm | 20.91–32.62 mm |
| F-number | 2.6–2.78 | 2.5–3.26 |
| Image size range | 60–120 in | 20.2–320 in |
| Vertical keystone | -40–40° | -30–30° |
| Horizontal keystone | — | -30–30° |
| Corner / warp correction | — | Warp |
| Light source | ||
| Light source type | Lamp | Laser (phosphor) |
| Light source detail | — | Dual Laser |
| Lamp wattage | 240 W | — |
| Light source life | Normal: 4,000 h · Smarteco: 10,000 h · Lampsave: 15,000 h · Eco: 10,000 h | Eco: 30,000 h |
| Warm-up time | 30 s | — |
| Cool-down time | 90 s | 90 s |
| Brightness | ||
| ISO light output | — | 3,000 lm |
| ANSI lumens | 3,000 lm | — |
| Brightness uniformity (centre-to-corner) | — | 80% |
| Contrast & black level | ||
| Dynamic contrast | 10,000:1 | 3,000,000:1 |
| Colour | ||
| Rec.709 gamut | 92% | — |
| DCI-P3 gamut | — | 95% |
| Gamut metric | Coverage | — |
| Gamma / EOTF presets | 2.2, 2.4, 2.6 | BT.1886, 2.2, 2.4 |
| Bit depth / 'number of colours' | 30 bit | — |
| Filmmaker Mode | — | Yes |
| Calibration & picture control | ||
| Colour management system | 6-axis | 6-axis |
| Greyscale control points | — | 11 |
| ISF certified | — | Yes |
| Picture mode memories | 2 | — |
| HDR | ||
| HDR formats | — | HDR10, HDR10+, HLG |
| Motion & gaming | ||
| Frame interpolation (MEMC) | — | Yes |
| Max refresh rate | 1920×1080: 60 Hz | 3840×2160: 120 Hz · 1920×1080: 240 Hz |
| Input lag (rated) | 1920×1080 @ 60 Hz: 16.7 ms | 1920×1080 @ 60 Hz: 17.8 ms · 1920×1080 @ 120 Hz: 12.4 ms · 1920×1080 @ 240 Hz: 8.5 ms · 3840×2160 @ 60 Hz: 17.8 ms |
| Auto low-latency mode | — | Yes |
| Audio | ||
| Speaker power | 5 W | 15 W |
| Speaker count | 1 | 1 |
| Audio channels | Mono | Mono |
| Audio partner | Waves MaxxAudio | — |
| Audio outputs | 3.5 mm | 3.5 mm, HDMI eARC |
| HDMI eARC | — | Yes |
| Inputs, control & connectivity | ||
| Max input signal | 1920 × 1200 | 4096 × 2160 |
| HDMI port count | 2 | 3 |
| HDMI ports (feature-level) | HDMI 1: HDMI 1.4a; HDMI 2: HDMI 1.4a, HDCP 1.4 | HDMI 1: HDMI 2.0; HDMI 2: HDMI 2.0; HDMI 3: HDMI 2.1 |
| Audio input terminals | 3.5 mm | — |
| Horizontal scan frequency | 15–102 kHz | 15–255 kHz |
| Vertical scan frequency | 23–120 Hz | 24–240 Hz |
| VGA input | Yes | — |
| USB media playback | No | Yes |
| RS-232 | Yes | Yes |
| LAN control | — | Yes |
| Wired IR input | — | Yes |
| 12 V trigger | — | Yes |
| PJLink class | — | Class 2 |
| Control ecosystem drivers | — | Crestron |
| Ethernet | — | Yes |
| 3D | ||
| 3D support | Yes | Yes |
| 3D sync method | DLP-Link | DLP-Link |
| 3D formats | Top-bottom, Frame sequential, Frame packing, Side-by-side | Frame packing, Side-by-side, Top-bottom, Frame sequential |
| Glasses included | 0 | — |
| Setup automation | ||
| Autofocus | None | — |
| Auto keystone | No | Yes |
| Acoustic noise | ||
| Fan noise (sound pressure) | Typical: 33 dB(A) · Eco: 29 dB(A) | Eco: 28 dB(A) · Bright: 32 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 | 3,048 m |
| High-altitude mode | Yes | Yes |
| Operating orientations | Table, Rear, Ceiling | Table, Ceiling, Rear, 360° |
| Rated voltage | 100–240 V | 100–240 V |
| Rated frequency | 50–60 Hz | 50–60 Hz |
| Power consumption (max) | 355 W | 239 W |
| Power consumption by mode | Max: 355 W · Normal: 320 W · Eco: 240 W | Eco typical: 110 W · Eco max: 127 W · Bright typical: 207 W · Bright max: 239 W |
| Standby power | 0.5 W | 0.5 W |
| Power supply | — | External brick |
| Physical & installation | ||
| Width | 296 mm | 274 mm |
| Depth | 224 mm | 219 mm |
| Height | 120 mm | 108 mm |
| Weight | 2.7 kg | 3.5 kg |
| Colours / finishes | — | Black |
| Mount hole pattern | Thread: M4 · Screw length mm: 20–25 | Thread: M4 · Screw length mm: 8 |
| Safety & compliance | ||
| Photobiological risk group | — | RG2 |
| Laser product class | — | Class 1 |
| Safety & market certifications | CE | FCC, CE |
| Support & ownership | ||
| Warranty | 🇺🇸 US 3 yr | 🇺🇸 US 1 yr |
| Light-source warranty | US: pre-installed lamp 2,000 hours or one year from purchase, whichever comes first (replacement lamp 90 days or 500 hours) | 5-year or 12,000 hour light source warranty (whichever comes first) |
| User manual | https://esupportdownload.benq.com/esupport/PROJECTOR/UserManual/TH671ST/TH671ST_UM_EN_230426092526.pdf | https://www.projectorcentral.com/pdf/projector_manual_12878.pdf |
| In the box | ||
| Box contents | Remote, Power cord, Vga cable, Manual, Quick start guide, Lens cap | Projector, Remote, Power cord, Power adapter, Quick start guide, Documentation |
| Remote type | IR | Backlit |
| 3D glasses in box | 0 | — |