9th October

5MP 2.8mm/4mm Lens Comparison

One of our most frequently asked questions is, what is the difference between the 2.8mm & 4mm 5MP cameras?

In the security world, a camera lens is what will determine the field of coverage and zoom level that your camera will provide. In tech terms, it's called Field of View (FOV).

Larger lenses such as our 5MP 4mm Turret Camera with built-in Microphone offers a more narrow and zoomed FOV. In general, the higher the number, the closer the subject will appear. So if you want to monitor (for example) a doorway or a building entrance, a larger lens is perfect for the job.

If your desired focal point is something less specific like a warehouse, a smaller lens such as our Uniview 5MP 2.8mm Turret Camera with built-in Microphone might be more appropriate for your installation.

In general a 5MP 2.8mm lens will offer you around 105° field of view and a 5MP 4mm lens will offer you an 87° field of view.

It's a common misunderstanding that the smaller the lens, the less detail you'll caputre but this is definitely not the case. The size of the lens purely correlates to the amount the camera caputres in the FOV.

The below images show you what image you'll get from a 5MP 2.8mm and a 5MP 4mm lens.