Security

A Guide to Buying CCTV Camera Lenses

Homeowners increasingly appreciate the need to invest in CCTV surveillance systems to enhance their security. Installing a surveillance camera not only helps you monitor what is happening around your home, but it also acts as a deterrent against suspicious activity. There are many factors to consider when it comes to installing CCTV security cameras, and the camera lens is undoubtedly one of the most important.

cctv lens

Choosing a Camera Lens

Choosing the right camera lens requires you to understand both your security needs and some technical features. With many features and functions to look at, understanding the technical characteristics of a camera lens can be tricky. For instance, when it comes to comparing turret vs dome camera, you need to be fully aware of what each option offers. That said, here are some factors to consider when choosing a security camera lens.

Focal Length

The focal length of a camera lens is an important parameter to look at as far a security camera lenses are concerned. This feature often defines the viewing angle of the camera. Ideally, a lens with a small focal length offers a wide field of view and is not able to give a detailed view beyond its focal length. On the other hand, a large focal length allows you to see far away but limits the viewing angle. Thus, it is up to you to define your objectives and choose the right camera.

Camera Format

When shopping for a camera, you will come across some numbers such as ½” ¼” or a 1/3” describing the image sensors. A small format means that the lens has a narrower field of view. Ideally, the format size of the lens you buy should be equal or greater than that of the camera to avoid cutting off some scenes.

Aperture

The aperture is the small hole in the lens that lets light into the camera. This parameter determines the cameras depth of field or the clarity between distant objects in its view. It is measured in a unit known as f-stops. Contrary to what you might expect, a camera with fewer f-stops represents a broader aperture and allows more light into the camera. A wide aperture captures nearby objects clearly and makes the background blurry. A small aperture, on the other hand, brings almost everything in focus.

camera aperture

The decision to get the best lens for your CCTV should be arrived at from an informed perspective. Carefully analyze the technical features if the lens. You also need to consider its compatibility with your camera.…