Joel Meyerowitz - 1979
When I got started, all serious photography was done in black and white. Colour was for snapshots and commercial work. There were a few colour photographers who's work was considered art, but they were idiocyncratic. People like Ernst Haas and Eliot Erwhit. Then, in 1979, Joel Meyerowitz published the book Cape Light. He used an 8x10 camera to take colour photos. This was unheard of and exploded the cult of black and white dominant since Edward Weston and Paul Strand. Now people can use whatever they like and be taken seriously as artists.