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How Digital Cameras Work? Film cameras used to capture images by opening a small hole (called an aperture) and letting light into the camera. Passes the light onto individual pixels for each of the red, green, and blue colours in the light. 25e6 Images created by digital cameras are captured as RGB files.

A digital camera uses an array of millions of tiny light cavities or "photosites" to record an image. When you press your camera's shutter button and the exposure begins, each of these is uncovered to collect photons and store those as an electrical signal.

Digital still cameras store photographs as digital bits on a memory card or tiny hard drive, as opposed to the film used in traditional cameras. Rather than developing and printing film, digital images can be downloaded easily to a computer.The better the camera, the shorter this delay will be.

Unlike a conventional camera that captures images on film, a digital camera uses tiny light-sensitive diodes which convert light into electrical charges. The image is recorded as squares or pixels. A digital photograph is made up of millions of these pixels.

A camera lens takes all the light rays bouncing around and uses glass to redirect them to a single point, creating a sharp image. When all of those light rays meet back together on a digital camera sensor or a piece of film, they create a sharp image.

When a digital camera produces an image by exposing an electronic sensor to light, the process involves a lens and a a0 that opens for a certain period of time.

A still film camera is made of three basic elements: an optical element (the lens), a chemical element (the film) and a mechanical element (the camera body itself). As we'll see, the only trick to photography is calibrating and combining these elements in such a way that they record a crisp, recognizable image.