ISO - international standards organisation
This involves light sensitivity. The higher the ISO, the lower the light sensitivity but the higher the quality of the picture.
Aperture - controls the levels of light that get into the camera. This helps the camera adjust to the brightness of the environment that the image is being taken in.
SLR - single lens reflex
The mirror in the camera helps the light path travel from the lens to the viewfinder.
The larger the 'F stop' number the smaller the aperture. This helps explain how the camera affects the exposure of pictures
Shutter Speed - controls the time frame that a motion picture is taken in. This is because it controls how long the shutter inside the camera stays open for.
This is all important to get the correct exposure on the pictures.
DOF - depth of field
this controls the focus of the image and how much of the picture is in focus.
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