The document defines juxtaposition in photography as using elements that contradict each other, such as color contrast, differences in size, age, gender, race, or height. It provides examples of photos by Hijja Ania that juxtapose messages about health and fast food. The photos contrast images promoting healthy eating with advertising an unhealthy food. The document also includes three of the author's own photos attempting juxtaposition through differences in gender, race, and behavior.