The "Mag 150" was developed in 1952 by Paul Lachaize (France) for some different types of cameras including the Rolleiflex and the Rolleicord. It was thus possible to pass from 12 images to 150 images in the format 6 X 6 cm on film 61.7 cm in width and 10 meters in length. There were also several models with a few variants. Here it is the Mecila Mag 150.