I do not accept the contemporary view that default settings of the software used to render a digital photo constitute a "natural" or "untouched" image. My model considers the digital image as one step in a sequential process in which the reflected light captured at locum in the time-space continuum is replicated in such a way that the result is pleasing to the minds eye. This does not necessarily mean fidelity of reproduction, as the original light may itself have been subject to "noise" that detracts from the desired end result. In short (as I am running out of space)... I fiddled wid it on my pooter.