Characteristics of Talbot Carlo Photography

Talbot discovered the photosensitivity of silver halide and the fixation of potassium iodide and concentrated brine in 1834, and obtained some paper photos of leaves and feathers that can be preserved by his own method. Unfortunately, this image preservation technology is not stable. His early photos have almost faded, leaving only the signature that can prove that he left an image on the photographic paper.

Talbot's experiment was carried out with translucent writing paper impregnated with silver chloride. After exposure, he got a negative image (that is, the black part represents light and the white part represents darkness), which inspired him to think that if the negative image of translucent paper is exposed on another photosensitive paper, a positive image with normal tone can be obtained. /kloc-in the summer of 0/835, Talbot used a small wooden camera customized by carpenter Abby to shoot Abby's pane and the field scenery outside the window on photosensitive paper. This world's oldest negative is still well preserved in the London Science Museum.

The negative obtained by Talbert photography can print any number of photos cheaply. In order to reduce the damage of negative paper-based fibers to the shadow of photos in the printing process, Talbot used a cleaner and more transparent paper base and coated a layer of wax on the washed negative.