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Network camera selection
Start with the target distance, field of view, lighting and mounting position. Then compare resolution, lens, low-light performance, events, PoE, storage and recorder support for the exact camera.
A clearly directed form for perimeter, approach and long-axis views with suitable mounting.
View bullet cameras Dome camerasA compact form for ceilings, public areas and locations requiring suitable impact protection.
View dome cameras Turret camerasFlexible aiming and straightforward installation for indoor or protected outdoor positions.
View turret cameras PTZ camerasMovable coverage and optical zoom for active operation across wider or more distant scenes.
Compare PTZ cameras NVR and storageMatch channels, bandwidth, events, decoding and retention to the full camera plan.
Review NVRs665 Products
IP camera planning guide
A useful camera is defined by what it records at the required distance and lighting, not by resolution alone. Evaluate optics, housing, network, storage and recorder behavior as one system.
Use bullet cameras for visibly directed views, domes where a compact or impact-resistant enclosure is useful, turrets for flexible aiming and PTZ cameras for active movement. Confirm the exact housing and mount for the surface and environment.
Specify the scene width and detail needed at the farthest important point. A fixed lens suits predictable coverage, while a varifocal lens supports adjustment during setup. Optical zoom changes the viewed area and does not replace continuous wide coverage.
Megapixels describe pixel count, not complete image quality. Compare sensor, lens, aperture, low-light behavior, infrared, backlight, shutter needs, scene movement, bitrate and compression for realistic day and night evidence.
Define which alerts, classifications, audio or alarm inputs are actually required, who receives them and how they are verified. Confirm event support across camera firmware, recorder and monitoring software before relying on a feature.
Check camera power class, switch budget, cable distance, stream bitrate, codec, NVR channels, incoming bandwidth, storage and decoding. Test required video, audio, PTZ and event functions on the intended recorder.
Use the cameras and optics model finder when you already have a model family or suffix. Specialist model checks include the iDS-2CD7146G0-IZ(H)S(Y) 4 MP varifocal dome and the DS-2CD6D55G2-IZHS(/NFC) five-directional camera. Confirm scene coverage, lens, analytics, mounting, power and recorder compatibility for the exact unit.
| Factor | What to check | Why it matters |
|---|---|---|
| Scene | Target distance, scene width, required detail, lighting and movement | Defines the lens, resolution and imaging performance required. |
| Form factor | Bullet, dome, turret, panoramic or PTZ plus mounting accessories | Matches aiming, visibility, impact exposure and installation surface. |
| Imaging | Sensor, lens, aperture, resolution, infrared, backlight and shutter | Determines usable day and night evidence beyond megapixels. |
| Functions | Analytics, audio, alarms, local storage and firmware support | Connects camera capabilities to the operating workflow. |
| Power and network | PoE class, switch budget, cable length, bitrate, codec and security | Supports stable streams and maintainable network design. |
| Recorder fit | Protocol, channels, bandwidth, storage, decoding and event support | Ensures recording, playback and required smart functions work together. |
Choose from the mounting position and environment. Bullet, dome, turret, panoramic and PTZ formats differ in aiming, visibility, impact exposure and coverage behavior.
Use a fixed lens when the required field of view is known. Use varifocal adjustment when the installation needs precise framing across a range of target distances.
Base resolution on scene width, target distance and required detail. Lens, lighting, motion, bitrate and compression can matter as much as pixel count.
Review sensor, aperture, infrared range, ambient light, glare, shutter behavior and target movement. Test whether motion detail remains usable after dark.
Check power class, switch budget, protocol, firmware, codec, bitrate, resolution, events, audio, channels, storage and decoding for the exact device combination.
Estimate the combined realistic bitrate, recording hours and retention days, then add headroom for scene activity, playback, exports and future cameras.
Features, analytics and compatibility vary by exact model, region and firmware. Verify the matching datasheet, mounting accessories and recorder behavior before a large deployment.