The document discusses different applications of photography across several industries: 1) The advertising, fashion, music, and sports industries all use photography to promote and market their products. This includes showing goods, highlighting trends, symbolizing albums, and promoting teams and events. 2) Photojournalism tells stories through images, capturing attention and emotions to engage readers before and beyond written articles. Notable examples include coverage of 9/11. 3) Fine art photography aims to create artistic impressions through techniques like macro shots and exposure levels that make images look painted. Landscape photographer Ansel Adams famously used black and white film in this way.