Salt print

As the salt pressure, even fotogenische drawing is called a photographic process (negative procedure) from the early days of photography, which was developed by William Henry Fox Talbot 1834-1839.

Method

Set forth William Talbot first photograms early as 1834. He experimented with different chemicals, to record an image. To this end, he watered writing paper in saline and silver nitrate solution. This light-sensitive silver chloride was formed. For the exposure, he put objects on the impregnated paper and then exposed it to the sun. So he used the principle of the contact copy.

The objects left behind on the paper stereotyped white outline, while the rest of blackened paper. Talbot used again a saline solution to fix the image.

He called The resulting photograms fotogenische drawings. These are an evolution of the already known from the Middle Ages process of natural self- pressure ( vouched for example, in Thomas Walgenstein etc.).

Beginning of the 20th century the process as photogram ( Laszlo Moholy -Nagy, El Lissitzky ), Schadografie ( Christian Schad ) or rayography ( Man Ray ) rediscovered for artistic photography. Even today, the principle is carried out in a laboratory setting in the photo lab of amateur photographers as well as some photographic artists.

Talbot himself developed his methods to further calotype (patent 1841), which was later named in his honor talbotype and thus created another photographic negative process.