A useful subject for patient looking
Daylight changes both what is visible and how a space feels to an observer. A journal can record the time, viewing position and rough shape of a shadow without pretending to measure illumination precisely. Choose an ordinary interior surface and observe indirect light; there is no need to look toward the sun. Repeated notes can reveal how much the apparent composition depends on clouds, curtains or the observer’s location. Those conditions belong in the record because they shape what a later reader can reasonably infer.