Abstract: A film speed code changer for use with an encoded film cartridge which contains film. The encoded film cartridge has a coded surface with a conductive surface with a non-conductive region. The dimensions of the non-conductive region provide a film speed code. An automatic camera is able to read film speed data for the film. The film speed code changer includes a sheet of flexible material, a layer of adhesive material and a backing sheet. The sheet of flexible material has a conductive surface and a backing surface. The layer of adhesive material adheres to the backing surface of the sheet of flexible material. The backing sheet covers the layer of adhesive material and is peeled away so that the backing surface of the film speed changer can be adhered to the coded surface of the encoded film cartridge. The film speed code changer also include an insulating material is applied to form a non-conductive region on the conductive surface of the sheet of flexible material.