Magnetic IX was used in the more expensive cameras and allowed for more information exchange. Most cameras with magnetic IX automatically recorded the exposure date and time on the magnetic layer, with more advanced models allowing the user to specify a predetermined caption to be printed on the photo or record the exposure settings, as well as determine print aspect ratio. Magnetic IX caused some problems for photo processors, who found their magnetic reading heads had to be cleaned frequently, or that their equipment's ability to print this information was limited.