The ARRI SD is for importing ARRI Look Files, camera set up files, frame line files, feature license keys and custom lens tables for the Lens Data Archive (LDA). Stores captured stills from the REC OUT image path in ARRIRAW (.ari, 12 bit, only on ALEXA Classic cameras), TIFF (.tif, 16 bit), DPX (.dpx, 10 bit) and JPEG (.jpg, 8 bit) format as well as logging files. Also used for installing Software Update Packets (SUPs).