Shutter speed: 1/180
ISO setting: 400
Aperture: 2.8
Shutter speed: 1/20
Aperture: 8
ISO setting: 400
Shutter speed: 1/3
Aperture: 22
ISO setting: 400
On a camera there are two focus modes, auto focus is for general use as it automatically sets the camera settings for you and manual focus is used for close up and fine detailed photos.
The focal length (F stop) determines what you see in the camera.
The depth of field means how much of an image is in focus, so if there is a wide aperture it has a small focal length with a small depth of field. Furthermore a narrow aperture contains the opposite meaning it has a large focal length (F stop) with a large depth of field.
Soft focus typically refers to a narrow depth of field and slightly blurred focus, resulting in ‘soft’ edges surrounding the subject. Sharp focus typically results in a wider depth of field and precise focus on the subject. Increasing the focus on more parts of the image results in a sharper appearance of the edges.
The foreground of the photo is defined by the element nearest to the viewer. The background is the farthest element from you, with the middle ground being the space in between. Some photos may just have a foreground and background, and not necessarily all three elements present or required.