4K describes the image resolution, but does not promise recognizable faces at any distance on its own. The lens, lighting, and placement determine how the available pixels land in the desired area. The recorder and viewing device must also be able to process the chosen recording.
Specify which details are needed and where a person or vehicle is located. Allow the person from the assembly site to assess how large that subject appears in the image. A broad overview of a whole terrain divides the available details differently than a focused shot of a single entrance. The maximum on the type sheet does not replace that assessment.
Cameras with the same resolution can perform differently in dark conditions. Sensor properties and lighting matter alongside the number of pixels. Request a motion assessment in the relevant location in the evening. A sharp stationary facade during the day does not prove that a moving person in the dark can be captured in use.
Determine which resolution, frame rate, and video compression the recorder supports for this camera. Also check the total processing capacity if multiple cameras are added at the same time. A available network connection does not mean that every desired recording profile is available. Record the actual recording quality as set upon delivery.
Determine the desired recording history based on the selected settings. Additionally, check how the normal app or computer displays the image. A lighter stream for mobile viewing can be practical, as long as the agreed-upon recording quality is maintained. Make that distinction visible in the user instruction.
Record a short passage with the desired movement and review it back. Also export a fragment to the normal viewing computer. Evaluate the details at the agreed distance and check whether the receiver can play the file. This tests the entire chain, from placement to using the images.
No. Light, sensor, lens and exposure settings remain important.
That must be checked for the concrete combination and settings.
