The camera has a log file feature that produces a record of the pictures taken and the metadata received over its serial port or network link. Each line of the log contains a system time stamp that has millisecond resolution. The time stamps between GPS fixes and the time stamp of the picture taken allow interpolation of the fields to get a more accurate fix. The log file can be set to off, of, or verbose. Off is no logging, On starts logging images and GPS data, and verbose records not only the data but any serial port errors or unexpected events. The verbose mode is used mainly for debugging.

0 - No Logging
1 - Logging On
2 - Log Errors and Data