Processing Timeline by Durham, William J

types of processing

wjdurham — 2025-05-05 16:42:35 UTC

cyanotype, tintype, wet collodion plate, silver albumen print, salt print, daguerreotype, C-41, ECN-2, E-6

Cyanotype

2025-05-05 17:19:14 UTC

Invented by Sir John in 1842 it was used as a easier and more cheaper way to produce photograms then silver based methods. When ferric ammonium oxalate is mixed with potassium ferricyanide it becomes sensitive to UV Light it can be painted on a piece of paper or fabric and be left to dry in a dark room when ready items can be arranged and left out into the sun for a while when done remove and wash with water and your left with a nice blue background and white outlines of your object.

cyanotype 1842

2025-05-06 16:08:59 UTC

Cyanotype photography, invented in 1842 uses light-sensitive iron salts to create images with a distinctive blue color. Popularized by botanist Anna Atkins, it was used for documenting plants and making blueprints, and remains valued for its artistic appeal.

Tintype 1850s

2025-05-06 16:23:33 UTC

Tintype photography was invented in 1850s tintype is made by coating a metal plate with wet collodion, exposing it in a camera while still wet, then developing it immediately to create a direct positive image. The process became popular for capturing quick and affordable portraits. -Shy

Salt Printing 1830s

2025-05-06 16:27:40 UTC

Salt printing process: the first salted paper technique was created around the 1830s by an English scientist, the process involved a paper with a salt solution and adding in the sliver nitrate to make the light sensitive. this process is pretty easy to create.

Wet collodion 1851

2025-05-06 16:32:53 UTC

The wet collodion process, invented in 1851, involved coating a glass plate with collodion, sensitizing it with silver nitrate, and taking a photo while it was still wet. It produced sharp images but required quick development in a darkroom before the plate dried, making it a challenging technique. -Nolawit

Celluloid 1869

2025-05-07 16:13:41 UTC

Celluloid was invented in 1869 by John Wesley Hyatt as a substitute for ivory. It was made by combining nitrocellulose with camphor, creating a moldable and transparent plastic. widely used in film, toys, and buttons, it was highly flammable and eventually replaced by safer materials. -Shy

Silver Albumen Print

2025-05-07 16:41:28 UTC

was developed in January of 1847 as the first commercial process of producing photos onto a paper base, through the use of egg whites, salt, silver nitrate, UV light, collodion or silver halide, and sodium thiosulfate

ECN-2

2025-05-07 16:44:07 UTC

The ECN-2 was invented in 1950 for it to develop color for their negative motion picture film, it was faster for development environmental friendlier film process.

Why was it needed, it was needed to capture wide dynamic range.

Calotype

2025-05-07 16:48:04 UTC

it was invented in 1841 and then was popularly used from the 1840s till the 1850s, it was a process that involved making a negative photo so that it could be copied make positive images

Polaroid

2025-05-07 16:49:44 UTC

was patented in 1929 and further developed in 1932 to be used in liquid crystal displays, microscopes, and sunglasses through the use of many microscopic iodoquinine sulphate crystals embedded in a transparent nitrocellulose polymer film

{Paper Negative was invented in 1840}

2025-05-07 16:58:18 UTC

Englishman William Henry Fox Talbot sought to create a more permanent alternative to the existing daguerreotype process.

The paper negative process consists of using a negative printed on paper to create the final print of a photographs apposed to using a modern negative on a film base of cellulose acetate.

Cibachrome print

2025-05-07 17:04:44 UTC

Cibachrome print was invented in 1963 and was used because it offered a high quality color printing process that had vivid color effects, the process involved bleaching away dyes in the paper to create the image

C-41

1shtrujillojasso1 — 2025-05-07 17:04:50 UTC

It was invented by Kodak in 1972 polyester film base, onto which multiple emulsions are coated. Each layer is only sensitive to a certain color of visible light. After exposed to temputures as high as 100 F the film is developed in a "color developer". The developing ingredient is a paraphenylene diamine-based chemical. Finished with bleach, fixer and a rinse. It was used because of the color it gave photos.

Daguerreotype Process 1839

2025-05-08 16:16:43 UTC

Daguerreotype was made in 1839. It’s a very detailed photograph made on a mirror-like surface of a sliver copper plate. The quality of the picture was really high but it was expensive and looking at the image was difficult in the wrong light. -Rafiq

Developed Out Prints 1850s

1ntasfaw1 — 2025-05-08 16:16:52 UTC

Developed out prints were first used in the 1850. This method was essential in traditional darkroom photography, images were exposed onto light-sensitive paper and then developed using chemical solutions. Developed-out prints allowed better image control by chemically developing the latent image after exposure. -Nolawit

Glass Plate Negative

2025-05-08 16:18:37 UTC

Glass Plate Negative: It first introduced in 1851 by Fredrick Scott Archer. This process involved a glass plate and solution where the camera was exposed and taking the picture while the solution was wet.The process had good image quality compared to the paper based method. -Rafiq

Sliver Albumen Process 1850

2025-05-08 16:28:17 UTC

The first sliver albumen process was developed in 1850. This process was a better version of the salted paper process in which it has better contrast and density to the prints. A good thing is after the process is finish the photo look very detail . -Rafiq

Contact Print

1shtrujillojasso1 — 2025-05-08 17:03:04 UTC

Invented in 1970s by Sir John Herschel. Contact paper is light-sensitized paper that is placed in direct contact with a negative and then exposed, the result is a contact print. It's used to deliver a crisp image and perfect registration. Most of the photos in the 19th century are produced from this method.

developed out print

2025-05-08 17:11:50 UTC

made in 1840-1910 and was used because some of the images could be developed in daylight the process a light sensitive emulsion is exposed to light with a negative

E-6

2025-05-08 17:34:55 UTC

The E-6 was invented in the 1975

why was it invented, it was invented because it was easy to process and then it didn't require hazardous chemicals

why was it needed, it was needed for color slide film and transparency film

Chromogenic prints (1935)

2025-05-09 16:38:29 UTC

Invented by German chemist Benno Homolka. Chromogenic prints are a reaction to two chemicals and the print. Dyes are used in 3 layers to create color after the print is oxidized

Daguerreotype

2025-05-09 17:24:39 UTC

was invented and introduced in 1839 as the first publicly available photographic process using an iodine-sensitized silvered plate and mercury vapor.

Tint type

2025-05-09 17:40:47 UTC

How was tint type processed, It was processed to create a positive directly to a thin sheet of metal coated with a dark lacquer

Why was it processed?, It was processed for its affordability and portability

ECN-2 1950s

1ntasfaw1 — 2025-05-12 15:57:21 UTC

ECN-2, developed in the 1950s for motion picture film, improved processing speed and color accuracy over older methods. It begins by removing the Rem-Jet backing, then uses CD-3 chemicals for color development. A stop bath, bleach, fix, and wash complete the process. Its efficiency and high-quality results made it the industry standard for professional filmmakers.

E-6 1970s

1ntasfaw1 — 2025-05-12 16:11:07 UTC

Introduced in the 1970s, the E-6 process improved color transparency film development by replacing older, less efficient methods. It uses a first developer, reversal bath, and color developer, followed by bleaching, fixing, washing, and stabilizing. E-6 became the standard for producing vivid, high-quality slide film.

Salt print

2025-05-14 16:50:15 UTC

The salt print was invented in the 1834 from William Henry fox.

Why was it made, it was made for sought to create more permeant alternative to the existing daguerreotype process

C-41 Process

2025-05-27 17:34:05 UTC

C-41 process was invented by Kodak in 1972 to replace C-22 processing. It was needed because it offered faster development compared to C-22 it was able to develop at 100 degrees compared to C-22 which develop at way lower temperatures. it also provided better quality photos at that time. the process involved color developers, bleach, fixer, wash, and stabilizer.

Glass Plate Negative

2025-05-28 16:40:32 UTC

There are two basic types of glass plate negatives: collodion wet plate and gelatin dry plate. Wet plate negatives, invented by Frederick Scoff Archer in 1851, were in use from the early 1850s until the 1880s. Using glass and not paper as a foundation, allowed for a sharper, more stable and detailed negative, and several prints could be produced from one negative.