Saturday, 17 October 2009

Independent Research - Aperture

Independent Research


Aperture


This is a diagram of the lens when changing the aperture.

The wider the aperture the smaller the F-Stop.

Depending on how much light is going in to the lens, for example if the F-Stop was F22 you wouldn't have much blur compared to an F-Stop of F2.8. Also an F.Stop of F2.8 would have a very blurry background.





This screen shot was on youtube and is a good website for getting research.

In this screen shot it is showing a diagram of how the lens works and how open the lens is when light is directed towards the camera lens.

It shows you that the smaller the f-stop the more the lens is open.


If I was taking a photograph with a f-stop of f16 then you would have a really slow shutter speed so that the light can enter the camera sensor in just enough time. Also if you were taking a picture with an aperture of 1.4, you will have a faster shutter speed.

Depth of Field


This is another screen shot showing you an example of what depth of field looks like.

If you have your camera lens on automatic and you point your camera at the object you want to photograph it will automatically focus on the object and make a noise to aware you it is locust and is ready to be used. For example the woman in the screen shot to the left, her face is in focus but the background is out of focus, this is called depth of field.





The deeper the depth of field the more its focusing on the object and reducing the depth of field makes the subject in focus but with less of a blur.















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