Beyond Human Perception

Most of the photos people take use the camera to capture what people see; the challenge is to capture things that a person normally would NOT be able to see. The subject might be unseen because it is imaged in NIR (near infrared), happens too quickly (use a fast shutter or flash) or too slowly (use a long exposure or time lapse stacking) for human perception, is seen from a place your camera can go but you can't, etc.