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the backup

When a Lytro camera is connected to a computer for the first time, it gets backuped. That essentially copies 970 MB of files to the computer.

The backup is repeatable, one camera can be connected to several computers and vice versa, backup of multiple cameras on can be on a single computer.

backuped files

The files contain important calibration data and they are packaged into several of data.C.# files ~262 MB each (see the file format). These packages can be found in the Lytro library, under cameras folder. This is what's in:

Folder B1CALIB
Folder CALIB
Folder L50CALIB
Folder T1CALIB
Folder T2CALIB
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