Oldest automatized image we have:
Heliographic engraving by Nicéphore Niépce (1825) of a 17th Century Flemish engraving.
Oldest foto we have:
"La cour du domaine du Gras" by Nicéphore Niépce (1826) at Saint-Loup-de-Varennes.
First self-portrait ever made with a camera:
Robert Cornelius used a daguerreotype (1839).
First cartoon in print media:
"Cartoon no. 1: Substance and Shadow" by John Leech (1843).
First sound ever recorded:
A fragment of the French folk song "Au claire de la lune" by Édouard-Léon Scott de Martinville using a phonautograph,
able to record sounds but unable to reproduce them (1860).
First color image ever:
James Clerk Maxwell shot a "Tartan Ribbon" (1861).
First motion (hard) picture:
Eadweard Muybridge photographed the horse "Occident" in California using 12 stereoscopic cameras along the horse's track (1878). This solved the mistake of painters putting two legs of the horses on the front and two on the back.
First illustrated song:
"The Little Lost Child" by Edward B. Marks and Joseph W. Stern (1894),
being the ancestor of modern music videos.
"Hand mit Ringen" by Wilhelm Röntgen, who took the left hand of his wife (1895).
First movie poster:
By Marcellin Auzolle announces "L'arroseur arrosé",
a short (49'') black-and-white-comedy film (June 10, 1895).
One of the very first motion pictures:
Even before the Lumiéres, the Skladanowsky brothers were projecting in Berlin some short films using their Bioscop (July 1895). Due to the lack of money to improve their technology, they were soon overshaded by the Lumiéres.
First public motion picture in modern cinema:
"La Sortie des usines Lumière". The screening of ten short films was held
at the Salon Indien du Grand Café in Paris (December 28, 1895).
First animated cartoon:
"Humorous Phases of Funny Faces" by James Stuart Blackton (1906).
First satellite image:
Taken by "Explorer 6" while being 27 km above Mexico (1959).
Sent by UCLA student Charley Kline. The intended text was the word "login",
but the system crashed after sending the first two letters: "lo" (at 22:30 on October 29, 1969).
There are different theories about the origin of the "@", being this note of a wheat shipment from Castilla to Aragón called "Taula de Ariza" the oldest (1448).
First MTV transmission:
"Video killed the Radio Star" by The Buggles (at 0:01 on August 1, 1981).
"Merry Christmas", sent from Neil Papworth to Richard Jarvis (December 3, 1992).
First YouTube video:
"Me at the zoo" by Jawed Karim (2005).
"just setting up my twttr" by Jack Dorsey (at 21:50 on March 21, 2006).