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I have been performing some tests on NEF files from my Nikon D50 and D200 cameras. I am trying to set the -EXIF:datetimeoriginal tag. I have noticed that once I have written to the tag, I can then not re-write to it again, I get the error "Error: Bad format (0) for SubIFD entry 0". If I restore the file from it's backup nef_original file I can perform the operation again with the same result. Please find example below:
C:\nefs>exiftool -EXIF:datetimeoriginal c:\nefs\DSC_0504.nef
Date/Time Original : 2008:06:12 11:09:13
C:\nefs>exiftool -EXIF:datetimeoriginal="2004:05:18 19:17:22" c:\nefs\DSC_0504.nef
1 image files updated
C:\nefs>exiftool -EXIF:datetimeoriginal c:\nefs\DSC_0504.nef
Date/Time Original : 2004:05:18 19:17:22
C:\nefs>exiftool -EXIF:datetimeoriginal="2005:12:38 11:57:22" c:\nefs\DSC_0504.nef
Error: Bad format (0) for SubIFD entry 0 - c:\nefs\DSC_0504.nef
0 image files updated
1 files weren't updated due to errors
I'm using Exiftool v7.35 command line. Is it a one shot deal to write to this tag and is there any chance the resultant .nef file contains corruption as it can not be re-written to?
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