Focus Of A Camera And Aperture

Focus

You can change the focus of a camera manually on the camera. Research the types of focus’ below. Find an example of these on the internet and upload them to your blogs. Research the ways in which this technique is created and the reason for choosing this type of focus.

Deep focus	A photographic and cinematographic technique using a large depth of field. How much of an image appears sharp and clear. The foreground, middle ground and background are all in focus.
Shallow focus	A photographic and cinematographic technique incorporating a small depth of field. One plane of the image is in focus while the rest is out of focus.
Soft focus	Soft focus is a lens flaw, in which the lens forms images that are blurred due to spherical aberration.
Out of focus	When the whole image is blurred and out of focus.

Aperture

  Activity 

Below is an example of an aperture range on a camera. The aperture is an opening in a photographic lens. The larger the aperture, the more light will pass through. The smaller the aperture the less light will pass through. Chose a subject/object which you wish to take a photograph of. Using the cameras, set the aperture to each of the settings has demonstrated below. Your photographs will be uploaded to your blogs as evidence.

Aperture Photo's
Below are images that I have taken of an object showing what the images look like when the aperture is changed.

Shutter Speeds

The shutter speed controls the length of time light is exposed to your film/sensor. The shutter is what makes the "click" sound when you press the button to take the picture. Shutter speed is measured in fractions of a second (1/speed). Example: 1/500 means that your shutter will be open for 1/500th of a second. A fast shutter speed can capture fast moving objects or help clear blur from the shake in your hand when you are holding the camera. On the other hand, if you want to smooth or blur movement you should slow down the shutter speed. See the examples from below:

Using the examples below, write down whether you think that you would use a fast or show shutter speed when capturing a clear image in good daylight.

Base ball game	Fast
Horse running	Fast
A tree	Show
A ball rolling	Fast
A portrait of a person	Show

Shutter speed not only can be used to control movement but it can be use to control how much light is recorded on your photo. Longer shutter speeds (or long exposures) record more light. Faster shutter speeds record less light.

Activity

Using the shutter speeds of 1/200 and 1/3 second, take a photograph of a subject/object that moves. You may wish to use running water, a moving car or person or you may wish to experiment with your own ideas. If captured correctly, you should end up with one photograph with detail and one that is blurred. These should be uploaded to your blogs as evidence.

Below is an example of two photographs that I have taken to show what the images would look like when the shutter speed is changed.