 On the "Rollei 35", the lever is located at the top left and the film rewinding crank at the bottom right of the camera body (instead of the cocking lever being at the top right and the rewind crank at the top left).The cartridge sits in the right side of the camera and correspondingly the exposures lay "upside down" on the film, reflected by the inverted position of the film inscriptions (type, frame numbers) of under/over landscape pictures.To change the film, the back must be slid downwards and removed fully, like on the Contax, for example.