Tuesday 27 September 2011

Shutter Speed and Aperture

Shutter speed controls the amount of time the lens is exposed to light.




Shutter speed can effect a photograph by adjusting the shutter speed you can control the movement of the subject for example a fast shutter speed will freeze the subject in action and a slow shutter speed will make the subject look blurred as it moves for however long the shutter is open for.
An example for a fast shutter speed would be a footballer in action or a racing car.
An example for a slow shutter speed would be a car at night to capture the headlights as a trail and an athletic runner.
An example of a fast shutter speed i have done is light trails. To take photographs like these I changed the setting on your camera to shutter priority and change the shutter speed to 3 seconds. I also changed the ISO settings to 200 which is the lowest on my camera making the image underexposed. 


This image is taken with a light. I would improve my ISO settings on this because it was quite high and the image is not totally dark as you can see some background lighting.


I like this image because you can see the light figure but you can also see some background lighting which makes the figure look like its sitting down on a chair. I would change the image if i took this again by taking the photo from the side so you would be able to see the light figure on the chair and also try to make the image sharper instead of being blurry.


I like this image because with lights you can create any effects.

I also took photos of a water fountain on a slow shutter speed to give the blurry effect.

Image before
Image after


Aperture is the hole or the lens in the camera that lets light through to the cameras sensor.




Aperture can effect a photograph by depth of field for example a wide aperture (F-4.5) gives a shallow depth of field meaning the object in front of the camera is more in focus than whats behind the object. 


An example of this is portrait photography. I decided to use a cuddly toy.


But if you use a narrow aperture(F-22) then the whole image should be in focus, more sharper. 
An example this is used for is landscape photography but i used a class room.
As you can see most of the image is sharp apart from some peoples movements.

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