The last 20 years have not been entirely kind to still photographers. Among other effects of television was the traumatic suspension of Life I and Look I. But the period has also seen greater acceptance of photography as an art form, and that moved John Szarkowski of New York’s Museum of Modern Art to mount this major exhibit of 200 works by 100 varied artists. They range from the well-known—Diane Arbus and painter Robert Rauschenberg—to such influential but unknown (outside the brotherhood, anyway) photographers as Jerry Uelsmann and Garry Winogrand. If there is a lack of theme, Szarkowski has made his point that there is a difference between the “mirror” photographers, whose stylized work distorts reality, and the “window” artists, who reproduce reality as accurately as they can. The exhibit travels November 13 to the Cleveland Museum of Art and moves to Minneapolis in January. It will also visit Louisville, San Francisco, Champaign, Ill. and Richmond later in 79.