Optoma UHZ35ST vs ViewSonic LX700-4K
Bold marks the better figure where both are stated to the same standard. “—” means the manufacturer doesn't state it.
 Optoma UHZ35STMSRP $3,299 |  ViewSonic LX700-4KMSRP $1,299.99 | |
|---|---|---|
| Display system | ||
| Imaging technology | DLP | DLP |
| Technology brand | DLP | — |
| Number of imaging devices | 1 | 1 |
| Chip / panel diagonal | 0.65 in | 0.65 in |
| Native aspect ratio | 16:9 | 16:9 |
| Native resolution | 1920 × 1080 | 2716 × 1528 |
| Pixel shift | XPR 4-way | — |
| Addressable resolution | 3840 × 2160 | 3840 × 2160 |
| Optics | ||
| Throw ratio | 0.5:1 | 1.06–1.45:1 |
| Projection distance table | 50″: 0.55 m · 60″: 0.66 m · 70″: 0.77 m · 80″: 0.88 m · 90″: 0.99 m · 100″: 1.1 m · 120″: 1.32 m · 150″: 1.65 m · 180″: 1.98 m · 200″: 2.2 m · 250″: 2.75 m · 36.43″: 0.4 m · 300.53″: 3.3 m | 30″: 0.7–0.96 m · 40″: 0.94–1.28 m · 50″: 1.17–1.61 m · 60″: 1.41–1.93 m · 70″: 1.64–2.25 m · 80″: 1.88–2.57 m · 90″: 2.11–2.89 m · 100″: 2.35–3.21 m · 110″: 2.58–3.53 m · 120″: 2.82–3.85 m · 130″: 3.05–4.17 m · 140″: 3.29–4.49 m · 150″: 3.52–4.82 m · 200″: 4.69–6.42 m · 250″: 5.87–8.03 m · 300″: 7.04–9.63 m |
| Zoom type | None | Optical |
| Zoom ratio | — | 1.36× |
| Focus | Manual | Manual |
| Vertical lens shift | 0% | -15–0% |
| Horizontal lens shift | 0% | — |
| Fixed offset | 116% | 137% |
| Focal length | 7.51 mm | 15.99–21.42 mm |
| F-number | 2.8 | 2.51–2.93 |
| Interchangeable lens | — | No |
| Image size range | 36–300 in | 30–300 in |
| Vertical keystone | -15–15° | -30–30° |
| Horizontal keystone | -15–15° | -30–30° |
| Corner / warp correction | Warp | Warp |
| Light source | ||
| Light source type | Laser (phosphor) | Laser (phosphor) |
| Light source detail | Laser (Optoma DuraCore) | Blue laser phosphor |
| Light source life | Rated: 30,000 h | Normal: 20,000 h · Eco: 30,000 h |
| Cool-down time | 90 s | — |
| Light-source dimming | Manual steps | Manual steps |
| Brightness | ||
| ISO light output | 3,500 lm | — |
| ANSI lumens | — | 3,500 lm |
| Claimed brightness (non-standard) | 3,500 | — |
| Claimed brightness unit | Unspecified | — |
| Brightness by mode | — | Standard: 1,977 lm · Bright: 3,091 lm · Cinema: 1,817 lm · Gaming: 2,164 lm · Srgb: 886 lm · User: 2,190 lm · Hdr: 1,933 lm · HLG: 1,912 lmMeasured |
| Brightness uniformity (centre-to-corner) | 75% | — |
| Contrast & black level | ||
| Dynamic contrast | 500,000:1 | 3,000,000:1 |
| Dynamic light control | — | Laser dimming |
| Colour | ||
| Gamma / EOTF presets | 2.2, 2.4 | — |
| Bit depth / 'number of colours' | 30 bit | 10 bit |
| Calibration & picture control | ||
| Colour management system | 6-axis | 6-axis |
| HDR | ||
| HDR formats | HDR10, HLG | HDR10, HLG |
| Motion & gaming | ||
| Frame interpolation (MEMC) | — | No |
| Max refresh rate | 1920×1080: 240 Hz · 3840×2160: 60 Hz | 1920×1080: 240 Hz · 2560×1440: 120 Hz · 3840×2160: 60 Hz |
| Input lag (rated) | 1920×1080 @ 60 Hz: 17 ms · 1920×1080 @ 120 Hz: 8.6 ms · 1920×1080 @ 240 Hz: 4.4 ms · 3840×2160 @ 60 Hz: 16.9 ms | 1920×1080 @ 240 Hz: 4.2 ms · 3840×2160 @ 60 Hz: 16 ms |
| Auto low-latency mode | — | Yes |
| Audio | ||
| Speaker power | 15 W | 15 W |
| Speaker count | 1 | 1 |
| Audio channels | Mono | Mono |
| Audio outputs | 3.5 mm, HDMI ARC, HDMI eARC | 3.5 mm, HDMI eARC |
| HDMI ARC | Yes | Yes |
| HDMI eARC | Yes | Yes |
| Inputs, control & connectivity | ||
| Max input signal | 4096 × 2160 | 3840 × 2160 |
| HDMI port count | 2 | 2 |
| HDMI ports (feature-level) | HDMI 1: HDMI 2.0; HDMI 2: HDMI 2.0, eARC | HDMI 1: HDMI 2.0, HDCP 2.2; HDMI 2: HDMI 2.0, HDCP 2.2, eARC |
| Horizontal scan frequency | 15–140 kHz | 15–135 kHz |
| Vertical scan frequency | 24–240 Hz | 23–240 Hz |
| RS-232 | Yes | Yes |
| LAN control | Yes | No |
| 12 V trigger | — | Yes |
| Control ecosystem drivers | Crestron | — |
| Wi-Fi | None | None |
| Ethernet | Yes | No |
| Firmware / software | ||
| Smart OS | None | None |
| 3D | ||
| 3D support | Yes | Yes |
| 3D sync method | DLP-Link | DLP-Link |
| 3D formats | Frame packing, Side-by-side, Top-bottom, Frame sequential | Frame sequential |
| Setup automation | ||
| Autofocus | — | None |
| Acoustic noise | ||
| Fan noise (sound pressure) | Min: 28 dB(A) · Max: 35 dB(A) | Normal: 31 dB(A) · Eco: 26 dB(A) |
| Environment & power | ||
| Operating temperature | 0–40°C | 0–40°C |
| Operating humidity | — | 10–80%RH |
| Altitude / high-altitude mode | 762 m | 3,048 m |
| High-altitude mode | Yes | Yes |
| Operating orientations | Portrait, 360° | Table, Ceiling, Rear |
| Rated voltage | 100–240 V | 100–240 V |
| Rated frequency | 50–60 Hz | 50–60 Hz |
| Power consumption (max) | 185 W | — |
| Power consumption by mode | Bright: 185 W · Eco: 126 W | Normal: 180 W |
| Standby power | 0.5 W | 0.5 W |
| Networked standby power | 2 W | — |
| Power supply | External brick | External brick |
| Physical & installation | ||
| Width | 274 mm | 286 mm |
| Depth | 216 mm | 216 mm |
| Height | 114 mm | 129 mm |
| Weight | 3 kg | 3.3 kg |
| Ingress protection | IP6X | — |
| Colours / finishes | White | — |
| Mount hole pattern | Thread: M4 · Screw length mm: 10 | Thread: M4 · Screw length mm: 8 · Hole count: 3 |
| Sealed optical engine | — | Yes |
| Safety & compliance | ||
| Photobiological risk group | RG2 | RG2 |
| Hazard distance | — | 1 m |
| Laser product class | Class 1 (IEC 60825-1:2014) | Class 1 |
| Safety & market certifications | FCC | FCC, CE |
| Support & ownership | ||
| Warranty | 🇺🇸 US 1 yr | 🇺🇸 US 3 yr |
| Light-source warranty | 5 years or 12,000 hours | 1 year limited warranty on the light source (US) |
| Latest firmware | UHZ35ST_C12_FW_OneClick | — |
| User manual | https://region-resource.optoma.com/products/documents/fafrOEdwat8KymDO94ZUVxn0eamb2y1Mrnyffkol.pdf | https://www.viewsonicglobal.com/public/products_download/user_guide/projector/LX700-4K/LX700-4K_UG_ENG.pdf |
| In the box | ||
| Box contents | AC power cord, Remote control, CR2025 battery, Quick Start Guide | Projector, Remote, Batteries, Quick start guide, Power cord, Power adapter |
| Remote type | IR | Backlit |