Smart Shield Systems
Cameras with 2-4mm Motorized Zoom
Ultra-wide, motorized varifocal cameras (≈2.8–4 mm) are perfect for doors, porches, hallways, and tight exterior approaches—places where you want a wide view but still need the ability to remotely fine-tune framing. Modern 2–4 mm “point varifocal” lenses let us nudge from extra-wide to moderately wide without climbing a ladder, while keeping H.265 efficiency, True WDR, and IR night vision for dependable day/night video.
Why Choose This with Smart Shield Systems
- Dialed-in coverage for entries & interiors: We set the lens near 2.8 mm for ~99° HFOV or tighten toward 4 mm (~80° HFOV) to center on faces and approaches.
- Remote tweaks, no ladder: Motorized 2.8–4 mm adjustment (“point varifocal”) from the app/NVR after install.
- Clean, pro installs: Weather-sealed IP67 housings with neat PoE cabling and IR tuned for your scene.
Key Features
- Motorized 2.8–4 mm lens (ultra-wide varifocal): adjust framing remotely for doors, porches, and small rooms.
- True WDR (up to 130 dB): handles bright backlight at glass entries.
- IR night vision: rated up to ~40 m (131 ft) on representative models for clean low-light coverage.
- Efficient recording: H.265/H.265+ keeps bandwidth and storage in check.
- Open compatibility: ONVIF Profile S/G on many units for broad NVR/VMS support.
Product Specifications (At-a-Glance)
- Lens: motorized 2.8–4 mm (point varifocal)
- Field of view: ~99.3° (2.8 mm) to ~80.0° (4 mm) horizontal
- WDR: up to 130 dB; 3D DNR, BLC/HLC
- Low light: 0 lux with IR (with IR on)
- Codecs: H.265/H.265+, H.264/H.264+
- Streams: main/sub/third (model-dependent)
- On-board microSD: up to 512 GB on many models
- Rating: IP67 weather resistant; compact bullet/turret/dome options vary by SKU
- Power/Network: PoE (802.3af); 10/100 Ethernet
- IR: smart IR, up to 40 m (model-dependent)
Popular Use Cases
- Front/side doors & porches (maximize width at 2.8 mm; tighten if needed)
- Hallways & lobbies where a wide, level view reduces blind spots
- Small parking aprons & walkways needing broad context plus face detail
Frequently Asked Questions
You keep the ultra-wide look but gain the ability to remotely trim the scene (e.g., reduce peripheral clutter and center on faces) without touching the camera.
On a representative 4MP unit, it’s about ~99° at 2.8 mm and ~80° at 4 mm horizontally—great for entries and small rooms.
Yes. Integrated IR is typically rated to ~40 m, and we tune IR/WDR/exposure so near-field subjects don’t wash out.
In most cases, yes. Many models list ONVIF Profiles S/G, so they work with a wide range of NVRs and VMS platforms—we’ll verify streams/events for yours.
Additional Resources
Download ManualReady to Go Ultra-Wide (with Control)?
Smart Shield Systems will specify the right 2–4 mm motorized model, install it cleanly with PoE, and tune framing, WDR, and IR for your exact scene—so you get the full picture, without the blind spots.