Architectural photography means the photographing of buildings and structures in an accurate and aesthetically pleasing manner. In order to meet the standards required in architectural photography, the photographer must be highly-skilled. Structures, unlike human beings, do not convey emotions or moods. As such, it is upon the photographer to set the mood through the use of ambient lighting. In this way, a photographer can make the photos dynamic, effectively telling a story through contrast, repetition and developing a pattern. In addition to the specific skills and techniques required, architectural photography involves the use of specialized equipment. This is especially important in commercial architectural photography. In terms of the types of photographs, architectural photographers take both exterior and interior photographs of buildings and structures. Architectural photography is useful in selling properties, commercial shoots for hotels and selling design concepts.