I suppose you could experiment with a higher ISO and maybe blend a couple of images together on separate layers?Ah, that costs extra, Martin...beyond what mere mortals can afford.
'Soul' is the representation of an emotion within us that is triggered by an image that connects with the past or a belief we carry within ourselves. For many soul can represented by imperfections that remind us of previous feelings or memories. It gets more difficult when you feel you need to 'buy' soul from Leica or any other camera company. Marketing is all about making us believe that we connect emotionally with a product or service, one way or another. For example they have just re-released their old 50 f1.2 lens, wanting to capitalise on those that feel that if they have the lens they might in some way relate to a previous time. In some way they will have new imperfections rather than older imperfections. I might be over analysing this, but hey ......I wish they would introduce some soul into digital files that create textural quality in OOF areas, its a lovely image Rob