I have used the Scheimpflug principle to correctly photograph relict periglacial features caused by pingos. But under such circumstances one does not apply bokeh. That is the kind of distinction one learns when they are trained as both a geomorphologist and a photographer. By contrast, a wedding
photographer might be concerned about bokeh, while it would be considered rude to toss the bride into
a supercooled permafrost meltwater pool at the center of a pingo. She might remain well preserved and
quiet for a long,long time, but as a photographer, you might not get much repeat business.