Understanding CCTV and Security Camera Resolution & Megapixels

Understanding CCTV and Security Camera Resolution & Megapixels


The sensor, also known as the imager, is an internal component of the camera that consists of a grid of pixels, known as photosites. These pixels capture intensity of light entering the camera in order to record information about what is being seen through the lens. Once recorded, this information is then transmitted to the camera’s processor.

Typically, the more photosites a camera has on its imager, the higher resolution the camera’s footage will be. In most cases, a bigger sensor contains more photosites, and therefore is able to capture more information than a smaller one, resulting in higher resolution images.

     Source: Prototypr.io

Higher resolution video and images enable you to capture footage in greater detail and allow for enhanced zooming capabilities (after the recording has been made). High resolution cameras, such as Ultra HD cameras, are great for recording in large car parks, stadiums or crowded bars. However the trade off with high resolution (e.g. 8MP, 6MP cameras) is that the products are generally more expensive and the recordings take up more storage space. There are also implications for the quality of night vision, as the best low light cameras are often in the 4MP to 5MP range. 

Our selection of CCTV cameras ranges from 2MP cameras all the way up to 8MP cameras. As a result, we can offer solutions to suit everyone, from budget-conscious customers to businesses that require 8MP to capture fine detail. 

Image sourced from: Unifore

HD (High Definition)
720p (1280×720) and 960p (1280×960)
Full HD
1080p (1920×1080)

Super HD or Quad HD

Super HD or Quad HD
5MP & 6MP
2560×1920 and 3072 x 2048
4K (Ultra HD)
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Here at Jim’s Security we have a wide range of CCTV packages starting at $1495 and offer professional installation of customer supplied CCTV systems from just $150 per camera. To find out more, visit our CCTV & Camera Systems page. Or to learn more about the different features and components of CCTV systems and  security cameras take a look at our CCTV and Security Camera Buyers Guide.

We are also readily available to help answer any questions or queries you may have about finding a security system tailored to the specific requirements of your home or business and lifestyle. Contact us on 131 546 or book a free onsite quote online.

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