CAMERA OBSCURA |
The Camera Obscura is one of the earliest forms of photography. This camera is in the form of either a box or a room with no windows.
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The way this camera captured pictures was upside-down. Although it was not a very efficient way to take pictures, it was good enough as a tool for the artist to trace an accurate sketch that could be developed into a painting.
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Daguerrotype
The Daguerrotype is one of the first forms of photography. This type of image is developed by a chemical reaction from a mixture of silver, iodine, and mercury vapour. It is then fixed by a salt solution at the end. The image produced on the silver plate is very clear, but only one image can be produced.
The Daguerrotype is one of the first forms of photography. This type of image is developed by a chemical reaction from a mixture of silver, iodine, and mercury vapour. It is then fixed by a salt solution at the end. The image produced on the silver plate is very clear, but only one image can be produced.
Talbotype/Calotype
This type of image is produced by a negative paper treated with silver. The image is exposed to light to become a positive image. Unlike the Daguerrotype, the Talbotype can produce multiple copies of the same image. Although, it is not as clear the Daguerrotype because of the photo transfer.
This type of image is produced by a negative paper treated with silver. The image is exposed to light to become a positive image. Unlike the Daguerrotype, the Talbotype can produce multiple copies of the same image. Although, it is not as clear the Daguerrotype because of the photo transfer.
The Collodian Wet-plate process in the best out of the other techniques because it produced a clear image and multiple copies. |
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In this process, a clean glass plate is coated with collodian and dipped in silver nitrate solution. This process can be quite difficult because the picture has to be developed immediately, because if the plate dried before the process is complete, the emulsion would harden and the photograph would be ruined.
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