The posting reminds us that there are three things affecting the depth of field in our images. They are
- aperture or f-stop
- focal length
- the distance to the subject
Constantini writes, "Wider apertures like f2.8 or f2.0 let in more light but provide less depth of field. With longer telephoto lenses there is less depth of field. And the closer your focusing point, or to generalize the closer the subject to the lens, the less of your image will be in focus. This becomes especially apparent with true macro photography. So combining all of these principles will then create the most exaggerated effect."