Using digital depth of field tools, you can create pretty convincing simulations of the real thing. Affinity Photo’s Depth of Field Live Filter does just that. What’s more, it can be used to create elliptical blur around a single subject or a tilt-shift blur to simulate a ‘miniature’ effect as if you’re looking down on a model rather than a real subject.
For all sorts of reasons, digital depth of field effects are not exact replicas of the optical depth of field effects from using wide-aperture lenses or