Allintitle Network Camera Networkcamera Network Cameras Fixed Info

| Feature | Fixed Lens (e.g., 4mm) | Varifocal Lens (e.g., 2.7-13.5mm) | | :--- | :--- | :--- | | | Often f/1.2 to f/1.6 | Typically f/1.8 to f/2.8 | | Depth of Field | Deep (everything from 1m to infinity in focus) | Variable (requires refocusing at telephoto end) | | IR Illumination uniformity | Excellent (LEDs matched to fixed angle) | Poor at wide or telephoto extremes | | Cybersecurity attack surface | Lower (no motor control firmware stack) | Higher (extra servo commands) | | Operating temperature | -40°C to 60°C (no motors to freeze) | -30°C to 50°C (motors can seize) |

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