Concepts Flashcards
Camera Obscura
Concept first noted by Mo Ti where light entering a chamber through a small hole projects an inverted image on the opposite side. Gionanni della Porta forst showed how to make on in “Natural Magic.”
Heliograph
A print made on a pewter plate with bitumen. The technique used by Niepce to make the first known photograph in 1826, “View from his window at Le Gras”
Silver Halides
light sensitive salts studied by Schulze and used to make photographs
Hyposulfite of Soda
chemical discovered by Hershel to fix silver halides. Used by both Talbot and Daguerre
Albumen Paper
Invented in 1850 by Louis Blanquart-Evard. Used albumen to hold silver salts on paper leading to better quality prints from negatives and opening photography to the masses in the Carte-de-Visite
Calotype
William Henry Fox Talbot’s technique using a paper salt negative to make a paper salt positive
Collodion Glass Plate Negative
Frederick Archer’s breakthrough in 1850 that allowed high-quality negatives to be produced. When combined with albumen paper and better lenses, led to photographs being a consumable item
Salt Print
prints made on silver salt embeded paper. First done by Wedgewood. Later done by Bayard and, most famously, Talbot
The First Photographic Lens
developed by Max Petzval in 1840
Le Gras, France
where Niepce made the first photograph, a heliograph
Photogenic Drawing
contact prints on light sensitive paper invented by Talbot
Combination Printing
a technique of combining negatives into a print. Pioneered by Rejlander. Also used by Gustave Le Gray and Henry Peach Robinson
Diorama
Attraction in Paris where Daguerre was a set designer
The Pencil of Nature
The first book of photographs published by Talbot in 1843
Orthochromatic
photographic media (film, collodion plates, paper) that are not sensitive to red light
