File Sets

Some digital cameras create files in sets when a picture is taken.  An example of this is the Canon 10D.  When a picture is taken, two files with the same “base filename” are created:  A .CRW file and a .THM file.  The CRW file is the raw image of the picture taken, and the THM file is a JPG thumbnail of the raw image.  The CRW file does not contain any EXIF data, but the THM file does.  Below are the file sets that Name Dropper currently recognizes and how Name Dropper handles them.

Canon CRW / THM
EXIF – When renaming a CRW file, Name Dropper looks for a THM file in the same folder with the same filename.  If one is found, the EXIF date & time (if being inserted into the new filename) is extracted from the THM file.  If the THM file is not found, Name Dropper will use the CRW file’s “Created” or “Modified” Date & Time (whichever is oldest) instead.  Under most circumstances, this is the same as the EXIF Date & Time anyway.
Batch Renaming – If both files of the set are selected to be renamed, Name Dropper will automatically keep the ‘new filename’ the same for both the CRW and THM files, even if using Series #s.  Because files in sets should always have the same base filename, it is not recommended to name them individually, even if you are only renaming one “picture”.  In that case, you should choose both the CRW and THM files in the set and do a “Batch Rename”.  Special Note:  Using the Randomize Series #s option  (see Batch Mode for more) is not recommended when working with file sets.  This is because the random numbers are generated prior to renaming, based on the number of files being renamed.  Since files in a set will share the same series #, this will cause some of the randomly generated series #s to be unused, resulting in gaps in the series #s.  Random Series #s are generally used prior to creating Photo CDs to mix up the images.  Since Photo CDs cannot display RAW images, this option is not generally used anyway when working with RAW file sets.

Category: Name Dropper
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