The Gelatin Silver Process - Photographic Processes Series - Chapter 10 of 12

The gelatin silver process was introduced at the end of the nineteenth century and dominated black-and-white photography in the twentieth century. The paper or film used to make gelatin silver prints and negatives is coated with an emulsion that contains gelatin and silver salts. Gelatin silver prints and negatives are developed out rather than printed out, which means that exposure to light registers a latent image that becomes visible only when developed in a chemical bath. This process requires shorter printing times than earlier printed-out processes such as salted paper prints and albumen prints. George Eastman’s introduction of flexible roll film and the Brownie camera revolutionized photographic practice and industry, putting photography into the hands of the masses for the first time. This process is responsible for all the black and white, color and motion pictures produced in the 20th century with analog materials.
This project is made possible by a grant from the U.S. Institute of Museum and Library Services, grant number MA-10-13-0194.

[@AeoniaPLuu]

The gelatin silver process was the dominant photographic process of which century?
21st
18th
19th
20th -> Correct

[@Hallo770]

20th

[@robertyoung1777]

We live in the 21st century.
20th century is 1900 - 1999
19th century is 1800 - 1899
18th century is 1700 - 1799
And so on.
A bit confusing.

[@regal394]

Thanks so much for this

[@AeoniaPLuu]

After which year did the sale digital cameras overtake the sale of film cameras?
2004 -> Correct
1965
1839
2017

[@General_P2001]

OMG thank you you saved from watching a 7 min video

[@AeoniaPLuu]

@@General_P2001 np wish ya luck. I'm doomed now gonna retake the class again in the future ahahahaaa

[@lamhuynh1245]

The GOAT

[@asifhusainarastu7193]

Hello , I would like to know how the Glass plate with the Gelatin emulsion after developing was printed ? Was it a Printing Out process?

[@ryanslabandtheworldofchemi3690]

No, it was developing out process, the developed gelatin plate negative was contact printed in a darkroom with silver gelatin photographic paper, forming a latent image, then developed and fixed to produce a print of the same size of the plate.

[@RCAvhstape]

@@ryanslabandtheworldofchemi3690 You can also put glass negatives in an enlarger just like flexible negatives, as long as you're careful not to break them, and enlarge them just like modern 4x5" film sheets. A freind of mine buys old glass negatives from antique shops and prints them in an enlarger, after scanning them to digital just in case.

[@Gcoughlin]

Where are Chapters 4, 5, 8 & 9?

[@GeorgeEastmanMuseum]

We are in the process of updating those chapters. You can watch an earlier version of each on our playlist here: th-cam.com/video/me5ke7agyOw/w-d-xo.html