By using small apertures a greater depth of field can be achieved. A foreground subject enhances this and gives balance and purpose within the frame. These pictures were shot on a very sunny midday and I didn’t need a slow shutter speed. the first image has an interesting pattern in the sand which becomes foreground detail.
Find a subject in front of a background with depth, focus on the subject and take a picture.
Without changing the focal length, set the lens to infinity. Take another shot. In picture 1 the background is now sharp.
Find good light for a portrait using a wide angle and a longer focal length.
In this portrait, by using a longer focal length of 85mm the subject stands out from the background and your eyes are drawn to the subject.
Take an image in front of a background with depth using a wide angle and a low viewpoint.
This is an unflattering way to take a portrait. The face is made rounder and the nose appears much larger while the background drops away.
I have taken a series of shots from the same viewpoint but with different focal lengths. I have used the actual focal lengths as they appear on the lens barrel. This exercise shows the movement that can be achieved through the lens rather than the movement of the photographer. To my mind the first image seems the ‘normal’ eyes view of the scene.