FLOWERS ON BLACK
If you ask a person to translate a color photograph into a black and white image, chances are that they will choose a different shade of grey for a specific nuance than you would. The perception of color is something very personal, and you never really know what another person sees when they see a certain color. What shade of grey that represents red or blue isn’t something scientifically assured, but a highly individual choice. Ever since the beginning of photography this has been a cause of discussion. In the beginning most photographic film was sensitive to blue light, but not red (orthochromatic film). This made blue skies pale white and anything red became pitch black. Even yellow translated into a dark grey shade. Since pictures with such a film didn’t create a natural looking image to most people, panchromatic film was developed. A film that is sensitive to most colors, although if you compare film from different brands you will probably see some difference in how they interpret the colors of the motif. Back in the analog days you could also tweak the result by using colored filters on the camera’s lens. Today you have all colors already inside your digital camera and therefore the possibility to chose whatever shade of grey you want for a specific color.
That is the special technique behind the Flowers on Black.