/* Elements of a photograph */
digraph photography {
"elements of a photograph" -> "photographer's perception";
"elements of a photograph" -> "technical aspects";
"technical aspects" -> "composition";
"technical aspects" -> "exposure";
"exposure" -> "aperature";
"exposure" -> "shutter speed";
"exposure" -> "\"film\" speed";
"composition" -> "rule of thirds";
"composition" -> "juxta position";
"composition" -> "back lighting";
"composition" -> "framming";
"composition" -> "tilt and shift";
"composition" -> "perspective";
"depth of field" -> "aperature";
"perspective" -> "depth of field";
"depth of field" -> "perspective";
"photographer's perception" -> "high key";
"photographer's perception" -> "mid key";
"photographer's perception" -> "low key";
"photographer's perception" -> "selective focus";
"photographer's perception" -> "hyperfocal distance";
"photographer's perception" -> "silhouette";
}