What is the advantage of Continuous Zoom over Motorized Lenses?

Continuous Zoom lenses maintain focus throughout the zoom range, allowing for uninterrupted tracking of targets. Motorized lenses often lose focus while moving and must re-focus, causing temporary blindness.

ZV-LZRV07503HC | 640x512 12μm 25~75mm Continuous Zoom Len

640 25~75mm Continuous Zoom Lens IP Thermal Module

ZV-LZRV07503HC | Zero Focus Lag | Target-Lock | for Critical Perimeters

Engineered for precision mid-range surveillance, this 640×512 thermal module delivers uninterrupted target tracking across 25–75mm (3×) continuous zoom. Unlike motorized lenses that lose focus during transition, its optical design maintains sharp imagery from wide situational view (17.5° FOV) to identification range (5.9° FOV)—critical for perimeter breaches and asset protection.

Key advantages:

• True continuous zoom: No focus interruption during zoom travel—ideal for tracking moving targets

• Verified detection ranges: Human recognition up to 390m; vehicle identification up to 520m

• Integrator-friendly: RS232/RS485 interfaces + ONVIF/PELCO-D/VISCA compliance for rapid VMS deployment

• Low power footprint: 5.8W max consumption, -30°C to 60°C operation

Deployed in industrial parks, power substations, and military base perimeters where reliable mid-range detection matters more than ultra-long reach.

Specifications

Camera
Detector type	Uncooled VOx Microbolometer
Effective Pixels	640 × 512
Pixel Pitch	12μm
Spectral Band	8 ～ 14μm
NETD	≤35 mK @F1.0, 300K
Lens
Focal Length	25 ~ 75mm, 3× Continuous Zoom Lens
Aperture Range	F0.9 ~ F1.1
FOV	17.5°×14.0° ~ 5.9°×4.4° (Wide ~ Tele)
Focusing Range	25mm: 5M—∞ / 75mm: 10M—∞
Sealing	IP67(front of lens)
Network
Video Compression	H.265 / H.264
Protocols	ONVIF (PROFILE S, PROFILE G, PROFILE T), SDK, TCP/IP, ICMP, HTTP, HTTPS, FTP, DHCP, DNS, RTP, RTSP, RTCP, NTP, SMTP, SNMP, IPv6
Intelligent Detection	Tripwire, Intrusion, Loitering, etc.
Image
Max. Resolution	30/25fps (1280 × 1024)
Image Settings	Saturation, Brightness, Contrast, Sharpness, etc.
Digital Zoom	4×
Pseudo Colours	10 Modes Available
Image Enhancement	Support
Image Filtering	Support
Dead Pixel Correction	Support
Noise Reduction	Support
Mirror	Support
Interface
Ethernet	100M Network Port
Analogue	CVBS
Digital	BT.656 (Optional)
Serial Port	1 channel RS232, 1 channel RS485
Functional Interface	Alarm (1 in / 1 out), audio (1 in / 1 out), USB
Storage	Micro SD / SDHC / SDXC card (Up to 512G), NAS (NFS, SMB / CIFS supported)
General
Operating Conditions	-30℃ ~ 60℃; Humidity ≤ 95% (non-condensing)
Power Supply	12V DC ± 10%
Power Consumption	Max: 5.8W
Dimensions (Unit: mm)	121.5*206.5
Weight	1366g

Distance Analysis

Based on EN IEC 62676-4:2025 | The calculation results are for reference only.

UAVs (0.2m): Detection (MAX. Distance 416.7m) / Recognition (MAX. Distance 104.2m) / Identification (MAX. Distance 52.1m)
Human (0.75m): Detection (MAX. Distance 1562.5m) / Recognition (MAX. Distance 390.6m) / Identification (MAX. Distance 195.3m)
Vehicle (2.0m): Detection (MAX. Distance 4166.7m) / Recognition (MAX. Distance 1041.7m) / Identification (MAX. Distance 520.8m)
Vessel (6.0m): Detection (MAX. Distance 12500.0m) / Recognition (MAX. Distance 3125.0m) / Identification (MAX. Distance 1562.5m)

FAQs

Q: What is the advantage of Continuous Zoom over Motorized Lenses?
- A: Continuous Zoom lenses maintain focus throughout the zoom range, allowing for uninterrupted tracking of targets. Motorized lenses often lose focus while moving and must re-focus, causing temporary blindness.
Q: Do these modules support video analytics?
- A: Yes, the high-contrast LWIR imagery is optimized for analytics. We also offer built-in AI algorithms for intrusion detection and fire detection on select models.

DRI Performance (EN IEC 62676-4:2025)

Based on EN IEC 62676-4:2025 standard with a 1.7m×0.5m human target (critical dimension 0.75m),
at 75mm (tele): Detection: 1563m | Recognition: 391m | Identification: 195m.
at 25mm (wide): Detection: 521m | Recognition: 130m | Identification: 65m. DRI detection pixels: Detection=3px, Recognition=12px, Identification=24px.