It is not superfluous to mention here also the law of inverse squares, the action of which you will certainly encounter. It sounds like this: the intensity of light is inversely proportional to the square of the distance from its source. This means that if the distance from the light source is doubled, the illumination of an object will fall fourfold. This is a lot – two stages of exposure. Our vision adapts to changes in light, and the difference in two steps will not be too noticeable to the eye. In the photo, it will become obvious.
Imagine that three people are sitting in a room by the light of a table lamp. Continue reading