Visual methodologies rely on artistic mediums like photography, film, drawings and paintings to represent and produce knowledge. These visual mediums capture reality in a rich way, and also reveal information about the artist or creator through elements like composition, focus, angle and moment of capture. Visual images are subjective interpretations of the world rather than objective windows onto it. There are different methods for interpreting visuals, including compositional analysis of elements and form, semiotic analysis of signs, symbols and their meanings, and discourse analysis of how images construct social views and are embedded within institutions of power.