The still image has come to be known as the visual pause. For the audience can savor a moment rather than being bombarded by a constant moving image of life as we experience it in real time.
Even in video and film the still image is used to help the audience absorb the content. Ken Burnes is an American director and producer of documentary films, known for his style of using archival footage and photographs. He has mastered the use of the still image. The audience is not bored by the still image, but rather mesmerized and able to digest the content.
Via Gregg Morris