The aperture controls the depth of field in a photograph and in simple terms can be explained as below:
- large aperture = narrow depth of field
- small aperture = broad depth of field
Depth of field is the items in the photograph that will be in focus and depending on where you want the focus to be will control what aperture you use.
- small numbers (i.e F-stops) mean a shallow depth of field so an F stop of 1.8 will be a shallow depth of field meaning you will focus on the object in the picture and the background will be blurred
- large numbers(i.e F.stops) mean a broad depth of field so an F stop of F22 will be a broad depth of field meaning that everything within the view of your camera lens will be in focus
My examples as below
first showing a shallow depth of field where the items at the back are not focused and then broad depth of field where everything is in the shot
photos pinned from Pinterest click on them to find the source – edited to add that some of the links to pinterest are incorrect I am working on getting these rectified
I will revisit all topics with examples and linky tools so that we can try and improve as we go along. For now I will do simple explanations and then build on them once the initial information has been explained.