Friday, February 12, 2010

Photography

There are many different types of photography. It can be sports photography, underwater photography, landscape photography, animal photography, aerial photography and portrait landscape, infrared photography, satellite photography, night photography, panoramic photography, etc.

We need cameras, lenses, filters, reflectors and even tripods to get a perfect picture. Aperture is a space which allows light to pass through in an optical or photographic instrument. What is the definition of focus? Why do we need to adjust the focus? Due to the optical properties of photographic lenses, only objects within a limited range of distances from the camera will be reproduced clearly. The process of adjusting this range is known as changing the camera's focus.

The shutter speed is basically the amount of time that the shutter is open. According to a website, in film photography, it is the length of time that the film is exposed to the scene we are photographing. Similarly, in digital photography, shutter speed is the length of time that our image sensor 'sees' the scene we are attempting to capture.

ISO speed stands for International Standards Organisation. It is used to measure the speed of a film. What is Metering all about? Metering is actually a process which involves the camera taking a light level reading from the scene and selecting the appropriate combination of aperture and shutter speed to set the required exposure value.

In photography, the white balance is adjusted so as to get the colors in our images as accurate as possible. As for the three main composition of photography, they are: The Rule Of Thirds, whereby the focus is on two-third of the picture; the Golden Rule, where every intersection must include the key things in the picture into the photograph itself. This will include reflections; the Diagonal Rule, which adds more depth to the picture so that it will not look "flat".

The techniques of photography is very broad so I will list out an example. We can use man-made or natural objects(i.e two rows of trees leading somewhere with a person walking between them) to create a frame for the picture. In this case, the trees will be the frame of the photograph.

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