CCTV Cameras
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CCTV Cameras: A Complete Guide to Modern Security Camera Systems
Modern CCTV cameras have evolved from simple recording devices to sophisticated systems with artificial intelligence capabilities. This comprehensive guide covers everything from basic specifications to advanced features like facial recognition and AI-powered analytics.
Technical Specifications and Features
Camera Types and Sensor Sizes
Sensor Formats
- 1/3" (6.00 x 4.80mm) - Common in standard security cameras
- 1/2.8" (6.46 x 4.84mm) - Better low-light performance
- 1/2" (7.18 x 5.32mm) - Enhanced light sensitivity
- 1/1.8" (7.60 x 5.70mm) - Professional-grade imaging
- 1" (13.20 x 8.80mm) - Superior low-light capability
Resolution Options
- 2MP (1920 x 1080p)
- 4MP (2688 x 1520)
- 5MP (2592 x 1944)
- 8MP/4K (3840 x 2160)
- 12MP (4000 x 3000)
Lens Specifications and Coverage
Focal Lengths
- 2.8mm: 98° viewing angle (close-range monitoring)
- 4mm: 87° viewing angle (general surveillance)
- 6mm: 54° viewing angle (medium-distance detail)
- 8mm: 40° viewing angle (longer distance)
- 12mm: 27° viewing angle (specific area focus)
- 16mm: 20° viewing angle (long-distance detail)
Varifocal Lenses
Common ranges include:
- 2.8-12mm: Versatile coverage
- 5-50mm: Long-range flexibility
- 8-32mm: Detailed long-distance viewing
AI and Smart Features
Facial Recognition Technology
- Deep learning algorithms
- Multiple face capture
- Face database management
- Real-time matching
- Age and gender recognition
- Expression analysis
Advanced Analytics
- Motion detection zones
- Line crossing detection
- Area intrusion detection
- Object left/removed detection
- Crowd density monitoring
- Heat mapping
- People counting
Environmental and Installation Specifications
Protection Ratings
- IP66: Dust-tight and powerful water jets
- IP67: Dust-tight and temporary immersion
- IK10: Impact protection
- TVS 6000V lightning protection
- Surge protection
Mounting Options
- Wall mounts
- Pole mounts
- Corner mounts
- Pendant mounts
- Ceiling mounts
- Junction box compatibility
Power Requirements
- PoE (Power over Ethernet)
- 12V DC options
- 24V AC support
- Power consumption ratings
- Backup power solutions
Common Applications and Recommendations
Entry-Level Security
- 2MP resolution
- 2.8mm fixed lens
- Basic motion detection
- IR range up to 30m
- H.265 compression
Professional Security
- 4MP-8MP resolution
- Varifocal lens
- Advanced analytics
- IR range up to 50m
- Smart features enabled
High-Security Installations
- 4K resolution
- AI-powered analytics
- Facial recognition
- Multiple sensors
- Redundant systems
By understanding these specifications and features, security professionals can select the most appropriate CCTV cameras for their specific surveillance requirements, ensuring optimal coverage and functionality for their security systems.