The vast majority of Edward Hartwig’s photographic legacy is constituted by monochromatic photographs. Experiments with the colour started with slides, which allowed him to obtain a much better quality than the negative technique did. He photographed mainly Polish, but also foreign, landscapes. Over time, later in his art life, there was the instance of ‘relishing with the colour’, as he himself called it. Hundreds of colourful photographs were taken at that time, which included both landscape pictures as well as abstract photographs referred to as ‘Impressions’.