the camera is a sensitive just the inside lence its self can take How a camera works. A camera is basically a lightproof box with a small aperture (opening) at one end and a light-sensitive electronic chip or piece of film at the opposite end. The electronic chip is called an image sensor. Light reflected from a scene enters the camera through the aperture and exposes the sensor or film. The inside of the camera must be completely dark so that light rays reach the sensor or film only through the aperture. How a camera works. A camera is basically a lightproof box with a small aperture (opening) at one end and a light-sensitive electronic chip or piece of film at the opposite end. The electronic chip is called an image sensor
Picture
How an image is
formed inside a camera
In nearly all cameras, the aperture is part of a lens
mounted on the front of the camera. A lens consists of multiple pieces of
curved glass or plastic inside a tube. The lens concentrates incoming light
rays on the sensor or film. In this way, the lens gathers enough light to make
an exposure in only a fraction of a second. Without a lens, the exposure might
have to be several minutes long, and it would not form a sharp image. camera have many different settings the lens gathers enough light to make an exposure in only a
fraction of a second. Without a lens, the exposure might have to be several
minutes long, and it would not form a sharp image.
Most film compact cameras and some digital compact cameras
have a direct-vision viewfinder, which is a type of optical viewfinder. A
direct-vision viewfinder is a small window above or to one side of the lens.
The user looks directly through the viewfinder at the scene in front of the
camera. The view through a direct-vision viewfinder is slightly different from
the view seen by the lens. This difference is called parallax error. With
faraway subjects, the difference between the two views is not important. But
with close-up subjects, parallax error makes it more difficult to frame the
subject correctly. To help correct for parallax error, the viewfinder usually
has lines that show the approximate borders of the picture area.
Digital compact cameras have an external monitor that
displays a video image of the scene. This monitor is often a liquid crystal
display (LCD) screen. The monitor can act as a viewfinder. It can also be used
to view pictures already taken. Some digital compacts have an electronic
viewfinder (EVF) instead of a direct-vision viewfinder. An EVF relies on a
miniature monitor inside the back of the camera. The photographer looks at the
monitor through a small window and sees the scene from the same viewpoint as
the lens. Thus, parallax error is avoided.
The most basic compact cameras are fixed-focus models with a
nonadjustable lens, a single aperture setting, and one or two shutter speeds.
They are designed so that everything within a certain range of distance from
the lens is in acceptable focus. Some of them are single-use cameras that come
preloaded with film. Single-use cameras are usually recycled into new cameras
or scrap plastic after the film is processed.
Digital single-lens reflex camera
Single-lens reflex (SLR) cameras are the most common cameras
used by professional and other serious photographers. They are usually heavier
and more expensive than compacts. However, SLR's give photographers more
control over how their pictures will look. Most SLR cameras offer both manual
and automatic controls over focusing, exposure, and other functions. In
addition, most SLR's can utilize a variety of interchangeable lenses. The
different lenses change the size and depth relationships of objects in a scene.
