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