George Eastman was 15 years old. The young George left school early and started working to help support the family. As Eastman began to have success with his photography business, he vowed to repay his mother for the hardships she had endured in raising him. In 1884, Eastman patented the first film in roll form to prove practicable; he had been tinkering at home to develop it. In 1888, he perfected the Kodak Black camera, which was the first camera designed to use roll film. In 1889 he first offered film stock, and by 1896 became the leading supplier of film stock
Digital single-lens reflex camera F-1 film SLR body at the Kodak Federal Systems Division to create the first DSLR camera. The digital back monitored the camera body battery current to sync the image sensor exposure to the film body shutter. Digital images were stored on a tethered hard drive and processed for histogram feedback to the user. This first camera was created for the U.S. Government, and was followed by several other models intended for government use, and eventually the first commercial DSLR, launched by Kodak in 1991. In 1995, Nikon co-developed the Nikon E series with Fujifilm. The E series included the Nikon