Keld Helmer Peterson was a Danish photographer who took pictures of industrial structures and edited them so that they were completely black and white, this meant there was no grey tones in the images. A more dramatic image is created with his method and it helps individual shaped stand out. he took photographs of everyday and mundane objects creating interesting geometric shapes. These images show a style called reductionism which is where something which was originally very complicated is extremely simplified. Some of his best known  work focuses on the style of minimalism as seen in his book ‘122 colour photography’ which he released in 1948. the book was very simple and included many abstract and minimal photographs often incorporating his interest in architecture. The book was innovative at the time because colour photography was no being used for artistic purposes. unlike other photographers in the 1940’s he made art out of mundane and everyday objects.