In this first image, I had the f-stop at 3.5 in order to achieve a sharp focus on just the foreground object. The rest of the image has gone out of focus so that all the attention is on the object that is in sharp focus, to make it the centre focus of the image.
In this image, the f-stop was at 11 to keep all three objects in focus. The third and furthest away object, the camera bag, has lost a little bit of focus which means the f-stop possibly needs to be a bit higher. The other two objects have stayed in sharp focus.
In this portrait image, the f-stop was at the lowest setting which was 3.5. This kept the subject in sharp focus and everything in the background out of focus. It also kept the colours in the image warm because it lets in less light, which was important in such a bright room.
This image was taken using the highest f-stop setting which was 29. The outcome of the image was poor quality and the subject appears quite white-washed. Everything in the image remained in focus, however, appears quite pix-elated.
The final image was taken on a medium f-stop setting of 13. The image has lost a bit of colour but less than the image before. It is also slightly blurred in the background but remains mostly in focus.
Photo Journalism 