Basic Functions of a Digital Camera
By the methods of capturing the
live data by observing the radiations and storing it on a sensitive medium such
as electromagnetic film or electronic sensors a process of creating still or
moving pictures is known as photography.
The light patterns emitted are
obtained in a photographic film activate a chemical or electrical sensor in the
storing material. This is usually done through a camera lens which is highly
sensitive.
Functions of a camera
The camera with a smart camera remote is the image
forming device. The electronic image sensors or a photographic film is the
recording medium. Nowadays digital cameras are also available which have
electronic medium as the storing medium.
Using a lens it controls the time
of the exposure of the camera to the outer world and the amount of light, which
is the basic principle of the camera. Then we can form an image on a film when
there is sufficient light. To obtain a real time original image this raw image
can then be developed.
The camera in which not only the
still but the total movements are captured is the movie camera which is another
type of camera. The data are captured in a sequence of photographs with no
delay in between them which is the basic idea behind the movie camera. Often
captured with the voice this forms a moving frame.
Controls of a camera
To ensure that we obtain a sharp
and clear photograph, we have to make sure that we adjust the camera either
manually or automatically. Below are some of the controls and its descriptions.
Focus
Focus is the adjustment that is
made to bring the desired area or the desired part to the sharpest point
possible. This is usually done manually, but this is also done automatically in
some latest digital cameras.
Aperture
Aperture can be referred to as
the adjustments of the iris. It is also known as the f number. The amount of
light that will pass through the lens is controlled by this number. To have
some effect on the focus the depth of the field and the aperture has also known.
Shutter speed
Shutter speed is the controls
over the speed of the shutter with which it closes and opens. This is usually
in the speeds of milliseconds. This is the time of which the imaging medium and
the light are exposed to the storing medium.
White balance
The white balance is a special
feature in the digital cameras with camera remote that is used to ensure that the white light is captured as it was in
the real medium so that the colors that are in the imaging area appear
naturally.
Metering
Metering is the measurement of
the amounts of the exposure of the light. This is done manually so that according
to the photographer's wish the shadow regions and the bright light areas are
captured.
Auto-focus point
To ensure that the focus is done
so that it satisfies the photographer's wish auto-focus point is an additional
feature that is employed in many of the new digital cameras. Nowadays in the
view finder multiple auto focus points are also available.
Comments
Post a Comment