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Dry Plate vs wet plate process
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Cons of Wet Plate
What is the dry plate process?
Pros of the Dry Plate
-Very inconvenient form which required the photogenic material to be coated, sensitized, exposed, and developed within 15 minutes, creating a "portable dark room"
-Everything had to be done before the plate dried (within 15 minutes)
-The plate would drip silver nitrate solution, causing stains and build-ups in the camera and plate holders
-The silver nitrate caused the plates to malfunction, failing to produce an image at times
-It was sensitive only to blue light
Dry plate, also known as gelatin process, is an improved type of photographic plate. It was invented by Dr. Richard L. Maddox in 1871, and by 1879 it was so well introduced that the first dry plate factory had been established.
-Needed less exposure light than wet plates, this made hand held cameras possible
-They could be stored for a period of time
-A portable dark room was no longer necessary
Pros of Wet Plate
(Mostly in comparison with the daguerrotype)
-This process made a negative image on glass as opposed to paper negatives incapable of being replicated.
-The photographer could make an unlimited number of prints from a single negative.
-Negatives were sharper, and clearer
-Relatively inexpensive process
-Only needed seconds for exposure.
Cons of the Dry Plate
the exposure is about 4-6x as long as a wet plate
1. Polishing the plate
2. Coating the plate
3. Sensitizing the plate
4. Developing the plate
Dry Plate vs
Wet Plate Process
Bibliography
What is the wet plate process?
http://en.wikipedia.org/wiki/Dry_plate
http://www.britannica.com/EBchecked/topic/641240/wet-collodion-process
http://artanddiscordstudios.com/blog/
http://en.wikipedia.org/wiki/Collodion_process
http://inventors.about.com/od/weirdmuseums/ig/Illustrated-History-Photograph/Dry-Plate-Photograph.htmhttp://www.derivedlogic.com/Traditional%20Photography/DryPlateProcess/DryProcess.html
Wet-collodion process, also called collodion process was an early photographic technique invented by Englishman Frederick Scott Archer in 1851. The process involved adding a soluble iodide to a solution of collodion (cellulose nitrate) and coating a glass plate with the mixture.