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4 Cards in this Set
- Front
- Back
Camera obscura |
Means "dark chamber", image projected through small hole, 16th century, most basic |
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Heliography |
Chemically treated metal plates, early 1800s |
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Daguerreotype |
1839, silver plated copper polished to a mirror finish, sensitized with iodine, exposed in a dark box, developed in mercury vapor and salt water, sealed behind glass. |
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Calotype |
Multiple images, 1841, photosensitive paper expose to light (film negatives), gallic acid |