The use of aperture within a shot allows focus to shift from clarity of items it the for ground with blurring behind, to fully focused crisp shots.
When thinking about aperture the easiest thing to compare it to is the human eye, in particular the pupil which controls the amount of light entering the eye.
When the lens if fully open, the items in the for ground are cleared than those in the back.
When the lens is narrow, the light is more focused and the image is clearer.
The higher the number on the F scale the smaller the aperture.
The two photos below will demonstrate this.
The first using a large aperture:
With this shot the flower at the front is crystal clear where as the one behind is blurred.
The second image is with a small aperture:
This shot shows clear detail on the purple flower and leaves
Taken in queens gardens on 26th Sept 2016
The first thing that appealed to me was the bright colours and new growth of the flowers, in contrast to the withered dead leaf’s below.
I feel the contrast in colour adds depth to the photo, whilst the surrounding leaf’s almost act as a frame.
Taken in Queens Gardens 26th September 2016
The shape of the tree struck me with its cascading leaf’s and long extending branches. there is something almost magical when you stand under and look at the sky. The leading line of the tree trunk guides your eye to the branches, leaves and the sky beyond. The contrast between the dark of the tree and the light of the sky adds interest and depth.
Taken Queens Gardens 26th September 2016
This shot was chosen due to the symmetry of the tree in the centre of the shot. This is amplified with the addition of the three benches lined behind the tree. The rule of thirds has been followed with the wall clearly defining the lower third. There is also a vertical background definition between the building and skyline.