What is the difference between analog and digital security camera?
Analog refers to CCTV cameras which us an analog video signal that is transmitted over coaxial cable back to a video recorder or monitor. So, the modern CCTV surveillance system (still sometimes called analog) is actually analog on the camera and cable side, but digital on the recorder side.
The main difference is that digital cameras don't have film but they use memory cards instead, also while in film cameras the ligh sensitive part is the film, in digital cameras there is the CCD/CMOS sensor which captures the light and transforms it into a picture.
- In a digital camera, exactly the opposite happens. Light from the thing you are photographing zooms into the camera lens. This incoming "picture" hits the image sensor chip, which breaks it up into millions of pixels. The sensor measures the color and brightness of each pixel and stores it as a number.
- The term “digital filmmaking” can refer to a number of different processes and techniques used in modern films, and can simply mean the use of digital cameras, or more extensive digital aspects such as characters and environments created completely within a computer.
- Photographic paper reacts to light to produce the image taken by a camera and stored on film. Since photographic paper reacts to light, pictures using camera film need to be produced (a process called developing) in a room that is completely dark. These special rooms used to develop film were called darkrooms.
Updated: 7th December 2019