This shows shallow depth of field because the tunnel in the background is not as clear as the object in the foreground. This was achieved with a low f number.
The Ultimate Photography Cheat Sheet
Your ultimate photography cheat sheet guide. Complete with info about aperture and how it relates to depth of field, shutter speed, ISO, and exposure. All the essentials.
How to Use Depth of Field
Autumn tree: I like the angle of this shot because it enhances the trees large size. Additionally I like the shallow depth of field, focussing the lower leaf yet enhancing its colour with the out of focus background.
This is a good example of shallow depth of field because all of the background is blurred out and all you can see is the foreground and the mini Effiel Tower. I think this photograph has quite a depressing, lonely mood because of the colours and how the photograph is framed and angled.
Element: Space This picture uses space by creating a three-dimensional depth with the row of bottles.
Depth of Field Calculator | How to calculate DOF
Using Depth of Field as a Compositional Tool
DOF as a Compositional Tool: Shallow depth of field isolates the grass and makes it the focal point
Depth of Field explained
What is Depth of Field? How aperture, focal length and focus control what's sharp | Digital Camera World