Chemical-based image storage medium.
Advanced Photo System (APS) is marketed by Kodak under the "Advantix" brand name, and is licensed to other vendors.
APS is not compatible with common 35mm cameras. APS offers three formats (panoramic, "normal" and "large") and a mechanism for storing exposure information as well as time, date and a user-selectable title with each frame. photofinishers use this information for adjustments during the development process.