![]() Date/Time Original and Create Date should be the same for a modern camera picture. This would be unlikely for a modern camera picture, as they usually save such info in the EXIF block. ExifTool would combine these two to create Date/Time Original. But there can be cases where, for example, Date/Time Original doesn't exist in the file, but there may be a DateCreated and a TimeCreated tag. In your example case, they are directly copied from the EXIF tags. They're created by ExifTool by combining other tags that are in the file. I think there are some differences if you're using a Mac or Linux system.Ĭomposite tags are not tags that are actually part of the file. Later versions of Windows had this turned off by default, but it can be turned back on with a reg edit. Under Windows XP, File Access Date/Time was changed whenever the file was read or written to. One of its main uses is to let backup software know that the file has been changed. I believe that File Modification Date/Time is changed whenever the the file is opened for a write operation, even when the write is 0 bytes. Create Date/Time is the timestamp for when the file was created. You are correct about the tags, they are info about the file from the underlying filesystem. ![]() ![]() ![]() While and is true EXIF data.Ĭan somebody give a short explanation when each of these is created and when each of these is changed?įor example, what is the usefulness of File Access Date/Time? Which one would be a good reference to take for sorting photos by their shooting time? group Create Date or group Create Date? File Modification Date/Time : 2015:07:23 18:34:00+02:00 from what I understand is system data, just displayed there for convenience, not really part of EXIF data (somebody correct me if I'm wrong on any of this). Analyzing various EXIF data, one noticed there are several date and time data inside. ![]()
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