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
Kodak Retina Vollenda miniature folder, along with the Ranca and Pupille collapsible cameras were smaller than the Leica and Contax cameras, but could use 50mm f:3.5 Elmar and other similar Tessar formula lenses in Compur shutters to create a larger 30mm x 40mm image on 127 rollfilm. The advantage of 35mm would be the elimination of the paper-backer allowing more images per roll of film. All of the Kodak Retina cameras from the mid 1930s to the late 1950s were folding cameras with a short self-erecting bellows, lens board, and folding metal door/cover. These folding Kodak Retina cameras are listed below with