Yes, that is an interesting effect. If you like that type of effect, you might look in to the types of images that can be created by rrrrrreallllly fast-aperture lenses, something like an f/0.7 or f/0.75 photocopier lens, which has ultra-shallow depth of field on close-up stuff. A few years back, photocopier lenses for macro work was sort of a "thing", and I have seem some absolutely gorgeous, dreamy macro images made with them.