… generally speaking, a thin negative, one with a minimum of contrast and density, yet with just sufficient to give the amount of contrast required i… - Alfred Horsley Hinton

In rave cases, if the sun be behind the observer, the distant land may catch a powerful ray of sunlight, whilst the clouds overhanging it may remain in shadow, and hence light buildings, yellow cornfields, etc., may appear lighter than the distant clouds, but they at the same time gain in an appearance of nearness.

This is another matter that will need careful study, because the earth, having only one chief source of light, it follows that if clouds be printed into a landscape, both must show evidence of being lighted from the same direction.

… what the photographer has to be urged, persuaded and argued with, to do, are often matters which the artist never needs to think about, because it would be unnatural to him not to act in unconscious obedience thereto.