How can I change the capture date/time in Nikon NRW raw files?
Asked 2/22/2015
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Some Nikon P340 raw files were shot with the camera date/time set incorrectly, and Lightroom's Edit Capture Time only updates the imported DNGs rather than the original NRW files. Is there a simple way to correct the capture date/time directly in the NRW metadata, ideally for multiple files at once?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
11y ago
2 Answers
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Phil Harvey's ExifTool works on NRW files and will do the job for you. It's a command line tool, but it's very powerful and will save you a lot of manual work.
If you can determine the difference in the time on the camera vs. the current time, ExifTool can adjust the time embedded in the file by that amount. For example, if the camera is 3 hours, 14 minutes and 15 seconds behind where it should be, this will bump the time ahead by that much:
exiftool.exe "-DateTimeOriginal+=0:0:0 3:14:15" filename.nrw
Similarly, if the camera was ahead, change the += to -= and ExifTool will subtract that much from the time instead of adding to it. The 0:0:0 is years, months and days.
If you have a directory full of NRWs that need changing, *.nrw will operate on all of them.
Originally by user6508. Source · Licensed CC BY-SA 4.0
user6508
11y ago
0
Generated from our catalog & community — verify before relying on it.
Yes. A common tool for this is ExifTool, which can edit metadata directly in Nikon NRW raw files.
If the camera clock was off by a known amount, you can shift the original capture time in one command. Example:
exiftool "-DateTimeOriginal+=0:0:0 3:14:15" filename.nrw
That adds 3 hours, 14 minutes, and 15 seconds to the file’s original capture time. If the camera clock was ahead, use -= instead of +=. The 0:0:0 portion is years, months, and days.
You can also apply it to multiple files, for example with *.nrw in a folder.
After correcting the raw files, reimporting or refreshing your catalog should let Lightroom reflect the corrected capture times more cleanly than editing only the DNG metadata. ExifTool is command-line based, but it’s widely used and well suited to batch date/time fixes in raw files.
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