Digital camera information about the astronauts' position. As with Texas Instruments employee Willis Adcock's filmless camera (US patent 4,057,830) in 1972, the technology had yet to catch up with the concept. The Cromemco Cyclops was an all-digital camera introduced as a commercial product in 1975. Its design was published as a hobbyist construction project in the February 1975 issue of "Popular Electronics" magazine, and it used a 32×32 Metal Oxide Semiconductor sensor. Steven Sasson, an engineer at Eastman Kodak, invented and built the first self-contained electronic camera that used a charge-coupled device image sensor in 1975. Early uses were mainly military and
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