How Digital Camera Works

This video from DECONSTRUCTED gives an easy to understand explanation of how modern digital photo cameras work to produce images. Their main feature is to transform light into electricity. The light source emit photons that come to the camera through its lens. The lens diaphragm allows how much light comes to the camera and it is called aperture control. After the diaphragm the light hits a mirror and then through a prism to your viewfinder. The prism is used to make the image you see in the viewfinder right side down. When you press a shutter release button, the mirror lifts and lets the light reach the image sensor through the shutter which controls the length of time the sensor is exposed to the light. The image sensor is a set of millions cells that capture photons and generate electrons which produce an electrical charge of different intensity (depends of how much light hit the sensor). The Central Processing Unit of your camera calculates the electrical charge and converts its parameters into a digital form of binary system.