Writer and photography / Jalo Porkkala. Jalo Porkkala takes us through the silver plating process and the difference in toners and formulas.
The history of photography and the technological advancements in image making are fascinating. An ongoing video series from the George Eastman Museum digs into historical processes like the camera obscura, the daguerreotype and the platinum print. And it has just released a new video that explores the invention of the gelatin silver process.
A silver dye-bleach process that forms an image by selectively bleaching dyes already existing within the paper. Renowned as one of the most stable, longest-lasting of all color prints. Collodion/Wet Plate Invented by Frederick Scott Archer in 1848.
The collodion process is said to have been invented in 1851, almost simultaneously, by Frederick Scott Archer and Gustave Le Gray.During the subsequent decades, many photographers and experimenters refined or varied the process.
During the development process, the film, or photographic paper, is immersed in a series of chemical solutions. The chemical solutions react with the silver and create the images on the film.
William Henry Fox Talbot patented the Calotype process in 1841. It is the direct ancestor of modern photography because it used a negative permitting multiple positive prints to be made from the negative and development of the latent image.
In black-and-white film, the silver-halide grains are coated in just one or two layers, so the development process is easier to understand. Here is what happens: In the first step of processing, the film is placed in developing agent that is actually a reducing agent.
Dec 12, 2014· PLEASE NOTE, AN UPDATED VERSION OF THIS VIDEO IS AVAILABLE ON OUR CHANNEL. The gelatin silver process was introduced at the end of the nineteenth century and dominated black-and-white photography ...Author: George Eastman Museum
The traditional silver halide photographic process shows promise of flourishing for some time in the future, in spite of the impressive advances that have been made recently in alternative technologies, particularly in electronic imaging.