Daylight variation and contrast effect on human perception of spatial quality: A case study of selected contemporary residential spaces in Sri Lanka

Visual perception of space is influenced by the composition and behaviour light. Daylight as a natural element creates different atmospheres in same through its variation intensity, colour, direction. It dynamic shadow patterns, fluctuating brightness, contrast levels. Although capacity to create - therefore contrast, an important characteristic daylight it often neglected research, where comfort visual performance take prominence. This research initiative explore effect on spatial quality human perception. The adopts two-step process, where, digital images are first mapped generate diagrams, secondly, generated form basis for survey utilising seven-point semantic differential scale, relationship between variability temporal explored diagramming spaces at selected times day year. scope study limited residential case studies focuses manner integrating into spaces. Results show that level correlates ‘low – high contrast’, ‘unvaried varied’, ‘calming exciting’, observer.