Longer dynamic range than darkroom prints

Piezography K7 has the longest dynamic range of any other digital or traditional process. We realize that this is a huge claim. However, film has a shorter dynamic range than the human eye. Photographic paper has a shorter dynamic range than film. The results of both can be plotted as an "S" curve in which the highlight and shadows are subject to compression. Piezography inks when used with Piezography K7/K6 profiles renders a linearization from dMax to dMin without prejudice to the highlights and shadows. It has many more stops available to the traditional film-based photographer than does darkroom printing paper. For the digital photographer, Piezography K7 can render a dynamic range close to that of human perception. Several digital cameras have been developed that can provide clean digital information which matches the advanced properties of Piezography K7. However, even ordinary digital cameras can be used to produce prints of unusually long tone. In place of digital cameras, film scanners can be used to digitize traditional negatives and transparencies to produce Piezographs™ which overcome the limitations of wet process papers. EPSON Ultrachrome with ABW does not have the shadow and highlight definition that Piezography does. Neither does HP and Canon. Seven shades of black ink will always be superior to systems using only 3 or 4 blacks.