Types of Security Cameras

Camera Types

• Analog Cameras: Use analog signals to transmit video, limited to 4-6 cameras per system, lower resolution (CIF or 4CIF)
• IP Cameras: Use internet protocol to transmit video, higher resolution (720p, 1080p, or 4K), can be connected to a network
• HD Cameras: High-definition cameras with higher resolution (720p, 1080p, or 4K), can be analog or IP
• Infrared Cameras: Use LEDs to provide night vision, can be analog or IP
• PTZ Cameras: Pan-Tilt-Zoom cameras, can be controlled remotely to move and zoom

Security Systems

• Centralized Systems: All cameras connected to a central control room or monitoring station
• Decentralized Systems: Cameras connected to individual recording devices or servers
• Hybrid Systems: Combination of centralized and decentralized systems
• Cloud-based Systems: Cameras connected to cloud storage for video recording and remote access

Image Quality

• Resolution: Measures the number of pixels in an image, higher resolution means clearer image
• Frame Rate: Measures the number of frames per second, higher frame rate means smoother video
• Field of View: Measures the angle of view, wider field of view means more area covered
• Low-Light Sensitivity: Measures the camera's ability to capture images in low-light conditions
• Compression: Reduces the file size of video recordings, common formats include H.264 and H.265

Camera Types

• Analog cameras use analog signals, limited to 4-6 cameras per system, and have lower resolution (CIF or 4CIF)
• IP cameras use internet protocol to transmit video, have higher resolution (720p, 1080p, or 4K), and can be connected to a network
• HD cameras are high-definition with higher resolution (720p, 1080p, or 4K) and can be analog or IP
• Infrared cameras use LEDs for night vision and can be analog or IP
• PTZ cameras are pan-tilt-zoom cameras that can be controlled remotely to move and zoom

Security Systems

• Centralized systems connect all cameras to a central control room or monitoring station
• Decentralized systems connect cameras to individual recording devices or servers
• Hybrid systems combine centralized and decentralized systems
• Cloud-based systems connect cameras to cloud storage for video recording and remote access

Image Quality

• Resolution measures the number of pixels in an image, with higher resolution meaning a clearer image
• Frame rate measures the number of frames per second, with higher frame rate meaning smoother video
• Field of view measures the angle of view, with a wider field of view meaning more area covered
• Low-light sensitivity measures a camera's ability to capture images in low-light conditions
• Compression reduces file size of video recordings, with common formats including H.264 and H.265