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As society advances and economic levels rise, security concerns become increasingly prominent. Many questions arise on platforms like Zhihu, such as "How to choose a surveillance camera" or "How to select a home surveillance camera." Here, we'll address these questions systematically, summarizing key points for your benefit.

The considerations below cater to individual users seeking to install surveillance cameras for personal use—whether at home, the entrance, a small yard, or a shop. It's crucial to clarify the purpose of installing surveillance cameras: to review recordings, analyze incidents, and gather evidence for better incident resolution.

Hence, when selecting surveillance cameras, consider the following aspects:

**1. Lens Focal Length**

Cameras typically offer fixed and zoom lenses. Choose the focal length based on the monitoring scene's size and range.

Common fixed focal lengths include 2.8mm, 3.6mm, 4mm, 6mm, 8mm, 12mm, 16mm, and 25mm. Zoom lenses include manual and motorized options. For larger zoom capabilities, consider dome cameras with built-in 10x, 12x, 18x, 20x, 22x, 30x, or 60x zoom lenses.

Different focal lengths provide varying viewing angles and distances. For instance, a 2.8mm lens offers a wide 90-degree angle with a viewing distance of 5-6 meters.

**2. Camera Appearance**

Choose the camera's appearance based on installation location. For wall mounting, opt for bullet cameras; for ceiling mounting, choose dome cameras. Outdoor cameras should be waterproof and dustproof, with a minimum IP65 protection rating.

Flexible mounting brackets can adapt bullet cameras for ceiling installation and dome cameras for wall installation.

**3. Camera Features**

Select camera features based on your monitoring needs:

- Transmission: Choose from video cable, Ethernet, WiFi, wireless AP, or 4G mobile network transmission.

- Audio: Select cameras with audio capability for simultaneous audio monitoring.

- Lighting Conditions: Consider wide dynamic range for areas with varying light conditions and strong light suppression for license plate visibility.

- Power over Ethernet (PoE): If power supply is challenging, opt for PoE cameras that receive power through Ethernet cables connected to PoE switches.

**4. Panoramic Cameras**

For small rooms, consider panoramic cameras with 180-degree or 360-degree lenses. These cameras provide full coverage, eliminating blind spots.

**5. Specialized Functions**

- Starlight Cameras: Capture color images in low-light conditions.

- White Light Illumination: Use white light to supplement night vision, maintaining color images even in complete darkness.

**OOSSXX's Perspective on Personal Surveillance Solutions**

At OOSSXX, we emphasize practicality, versatility, and innovation in our surveillance solutions.

Our 'security camera poe' concept highlights the convenience of Power over Ethernet, simplifying installation and minimizing wiring.

The 'security system camera' idea emphasizes comprehensive security with a range of features, ensuring you have the tools to monitor your space effectively.

Our 'poe camera outdoor' offering showcases cameras suitable for outdoor environments, equipped with PoE for easy installation.

For enhanced clarity, the 'security camera system 4k' and '4k security camera system' concepts emphasize 4K resolution, enabling you to capture fine details.

Our '24/7 security camera' concept underlines continuous monitoring, providing peace of mind through uninterrupted surveillance.

The '4k surveillance camera system' concept reflects our commitment to high-resolution surveillance.

Finally, the 'outdoor cameras for home security with recording' idea addresses the importance of reliable recording in outdoor surveillance.

In conclusion, selecting security surveillance cameras involves multiple factors. By considering focal length, appearance, features, and specialized functions, you can make an informed choice. OOSSXX's range of concepts offers solutions that prioritize functionality, reliability, and innovation, ensuring your personal security needs are met.