Question 1
- Pick three events in the timeline from this week’s lesson History of Photography: An Introduction, and find photographs of the event on the Internet or in the library and write a paragraph explaining the event in more detail. Include your photographs in the description.
TINTYPE
Before photographers had the ability to take a photograph as we know it, they had to first find a way to make a photograph. One of the ways that people created images in the 1800s and throughout the 1900s was by creating a positive image on a tin plate. This is what became known as the tintype.
Tintype from ca 1800s
What is a Tintype?
A tintype is a positive photograph that is taken on a thin plate made of tin. Tintypes are commonly referred to as a melainotype or ferrotype and are created by coating a thin sheet of metal with a dark lacquer and then applying a collodion-nitrocellulose solution immediately before exposure.
The tintype was an alternative to the commonly known ambrotype photograph at the time and was also very similar to daguerreotypes. Tintypes were popular amongst Civil War soldiers at first and then eventually spread to a wider audience including immigrants and working class people in the late 1800’s.
https://filtergrade.com/what-is-a-tintype/
https://en.wikipedia.org/wiki/Tintype
Wet plate negatives
The wet collodion process was a photographic process used to produce a negative. It was invented by F. Scott Archer (1813–1857) in 1848 and published in 1851.
Wet-collodion-on-glass negatives were valued because the transparency of the glass produced a high resolution of detail in both the highlights and shadows of the resultant prints (see image below). In addition, exposure times were shorter than those for the daguerreotype or calotype, ranging from a few seconds to a few minutes, depending on the amount of light available. Finished negatives were usually used to produce albumen prints, although salt prints were sometimes made during the 1850s and early 1860s.
The first photograph of Earth taken from space
On 24 October 1946, rocket scientists captured the first images of Earth taken from space.
This is the first photograph of Earth ever taken from space. It was captured on 24 October 1946 from a rocket 105 km above the ground that had been launched from the White Sands Missile Range in New Mexico, USA.
The rocket was a German V2, captured by the Americans at the end of World War II. Hundreds of scientists and engineers from the Nazi rocket program were vital to the postwar development of the American and Russian space programs.
A 35mm motion-picture camera set to snap one picture every second and a half.
The resulting images, developed from film dropped back to Earth in a tough steel canister, were like nothing that had been seen before. Until this point, the highest vantage point from which photos had been taken was some 22 km, aboard a high-altitude balloon.
The balloon pictures had shown the curvature of the Earth at the horizon, but the rocket photos opened new possibilities. Clyde Holliday, the engineer who developed the camera, saw the potential: in a 1950 National Geographic article, he predicted that one day “the entire land area of the globe might be mapped in this way”.
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