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With this feature you can change the date/times for the selection of images. It allows you to change the XMP/Exif date or date/time, the file date/time or match the file date with the XMP/Exif date.
To (re)date multiple images at once you need to select them first. After you have selected your images, select “Collection | Operations | Redate selected images”. You can also press the keyboard shortcut [Ctrl]+[Shift]+[F2].

The "XMP/Exif Date/Times" Tab sheet contains the fields:
Change Exif Date/Time
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Specify if you want to change the Exif’s main date/time (most commonly the date the Exif was last altered).
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Change Exif date/Time Original
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Specify if you want to change the Exif’s date/time original (most commonly the date of the image’s content or when the picture was taken).
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Change Exif date/Time Digitized
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Specify if you want to change the Exif’s date/time Digitized (most commonly the date that the image file was created in a digital form; e.g. scanned images have a date.time original that differs from digitized, while digital camera’s don’t).
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Hand Entered
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Use this option if you want to change the Exif date/time to a specific date/time for all selected images.
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Shifted
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Use this option if you need to change the Exif date/time by shifting it a few years, months, weeks, days, hours, minutes, seconds.
This is very helpful when you shot images in a different time zone, but you forgot to change the camera’s date.
When using this option, specify how many years, months, weeks, days, hours, minutes, seconds the Exif date/time needs to be shifted. You can specify positive values to shift forwards or negative values to shift backwards. You can enter values in every part of the date. So, for example, you can combine a shift of 1 month minus 3 days.
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Cumulative Shifting
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When you select this option, IDimager will increment the shifted time for each image that it processes. For instance, if three images need to be re-dated for 1 day cumulative, then the first photo will get a date + 1 day, the second photo a date + 2 days and the third photo a date +3 days.
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The "File Date/Time" tab contains the fields:
Change File Date/Time
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Specify if you want to change the file’s date/time value. The file's Creation Date as well as the file's Modified date will be updated.
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Set file date/time to Exif
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Select this option if you want the file date/time to be set to the Exif date/time.
By de-selecting this option you can specify a single date and optionally a time value.

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If you change the Exif date for images that don’t have existing Exif information, then IDimager will create an initial Exif block to hold the new date/time(s). This only applies to image formats that can contain embedded Exif information such as JPG, TIFF, DNG and PSD. For all other files, IDimager will update or create XMP files.
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