How does a camera take picture?

Cameras record images. Images that we see with our eyes are fleeting – one moment they are there, the next moment they are gone. These same images can be recorded and stored with cameras. But how is this done?   A still film camera is made of three basic parts – an optical element which is the lens, a chemical element or the film, and a mechanical element that is the body of the camera itself. Photography is adjusting and combining these elements in such a way that they record a crisp, recognizable image.Most of the inside of a camera is an empty space. The empty space is dark, because it is sealed off from the light outside. Light can only get in when a little door at the front of the Camera, known as the shutter, is opened for a very short time.The light passes through a lens which is a type of glass. The lens bends the light and ends up marking an image on the film at the back of the camera. When the light hits the film, the chemicals on the film change to capture the image. The film is then taken out of the camera and treated with other chemicals to make the image visible and permanent.