Complex sentence: The photographic setup of candid photography is best described as un-posed and unplanned, as immediate and unobtrusive, as opposed to classic photography, such as carefully staged portrait photography, landscape photography or object photography.
Split into simpler sentences: The photographic setup of candid photography is best described as un-posed and unplanned, immediate and unobtrusive. This is in contrast to classic photography, which includes aspects such as carefully staged portrait photography, landscape photography or object photography.