Time shift not updating file

[DcnPat]

Attempting to shift time fields in Pentax raw file (PEF) from a Pentax K1mkII does not update the file but manually specifying the information instead of -time+=+07:00 does.

Windows 11

C:\Users\patri\Downloads\exiftool-12.96_64\exiftool-12.96_64>  exiftool -ver

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12.96
starting values

C:\Users\patri\Downloads\exiftool-12.96_64\exiftool-12.96_64>  exiftool -time:all c:\test\*pef

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File Modification Date/Time    : 2024:09:16 22:15:52-04:00
File Access Date/Time          : 2024:09:16 22:22:39-04:00
File Creation Date/Time        : 2024:09:16 21:03:09-04:00
Modify Date                    : 2024:05:25 04:33:31
Date/Time Original              : 2024:05:25 04:33:31
Create Date                    : 2024:05:25 04:33:31
Date                            : 2024:05:25
Time                            : 11:33:31
World Time Location            : Destination
Hometown DST                    : No
Destination DST                : Yes
Hometown City                  : New York
Destination City                : Paris
Manufacture Date                : 2021:07:16
Let's try shifting all the time fields at once

C:\Users\patri\Downloads\exiftool-12.96_64\exiftool-12.96_64>  exiftool -time:all+=+7:00 c:\test\*pef

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    0 image files updated
    1 image files unchanged
That didn't work. Let's try specifying one tag at a time.

C:\Users\patri\Downloads\exiftool-12.96_64\exiftool-12.96_64>  exiftool -DateTimeOriginal+=+7:00 c:\test\*pef

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    0 image files updated
    1 image files unchanged
Still not working. Let's try manually specifying a date - time value.

C:\Users\patri\Downloads\exiftool-12.96_64\exiftool-12.96_64>  exiftool "-DateTimeOriginal=2023:05:25 11:33:31" c:\test\*pef

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    1 image files updated
That works.

C:\Users\patri\Downloads\exiftool-12.96_64\exiftool-12.96_64>  exiftool -time:all c:\test\*pef

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File Modification Date/Time    : 2024:09:16 22:24:04-04:00
File Access Date/Time          : 2024:09:16 22:24:05-04:00
File Creation Date/Time        : 2024:09:16 21:03:09-04:00
Modify Date                    : 2024:05:25 04:33:31
Date/Time Original              : 2023:05:25 11:33:31
Create Date                    : 2024:05:25 04:33:31
Date                            : 2024:05:25
Time                            : 11:33:31
World Time Location            : Destination
Hometown DST                    : No
Destination DST                : Yes
Hometown City                  : New York
Destination City                : Paris
Manufacture Date                : 2021:07:16
I have the same behavior if I specify an explicit file name. What am I doing wrong in the time shift example?

Verbose output:

C:\Users\patri\Downloads\exiftool-12.96_64\exiftool-12.96_64>  exiftool -v3 -DateTimeOriginal+=+7:00 c:\test\*pef

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Shifting MIE-Doc:DateTimeOriginal if tag exists
Shifting QuickTime:DateTimeOriginal if tag exists
Shifting UserData:DateTimeOriginal if tag exists
Shifting CanonRaw:DateTimeOriginal if tag exists
Shifting Kodak:DateTimeOriginal if tag exists
Shifting Reconyx:DateTimeOriginal if tag exists
Shifting Reconyx:DateTimeOriginal if tag exists
Shifting Reconyx:DateTimeOriginal if tag exists
Shifting XMP-exif:DateTimeOriginal if tag exists
Shifting ExifIFD:DateTimeOriginal if tag exists
======== c:/test/IMGP1448.PEF
Rewriting c:/test/IMGP1448.PEF...
  Editing tags in: ExifIFD IFD0 MIE-Doc MakerNotes QuickTime TIFF UserData XMP
  Creating tags in:
  FileType = PEF
  FileTypeExtension = PEF
  MIMEType = image/x-pentax-pef
  Rewriting IFD0
  Rewriting XMP
    [nothing changed in XMP]
  Rewriting ExifIFD
  Rewriting MakerNotePentax5
  Rewriting LensRec
    [nothing changed in LensRec]
  Rewriting ShakeReductionInfo
    [nothing changed in ShakeReductionInfo]
  Rewriting FaceInfo
    [nothing changed in FaceInfo]
  Rewriting AWBInfo
    [nothing changed in AWBInfo]
  Rewriting TimeInfo
    [nothing changed in TimeInfo]
  Rewriting LensCorr
    [nothing changed in LensCorr]
  Rewriting CameraSettingsUnknown
    [nothing changed in CameraSettingsUnknown]
  Rewriting AEInfo3
    [nothing changed in AEInfo3]
  Rewriting LensInfo
  Rewriting LensData
    [nothing changed in LensData]
    [nothing changed in LensInfo]
  Rewriting FlashInfoUnknown
    [nothing changed in FlashInfoUnknown]
  Rewriting CameraInfo
    [nothing changed in CameraInfo]
  Rewriting BatteryInfo
    [nothing changed in BatteryInfo]
  Rewriting AFInfo
    [nothing changed in AFInfo]
  Rewriting KelvinWB
    [nothing changed in KelvinWB]
  Rewriting ColorInfo
    [nothing changed in ColorInfo]
  Rewriting EVStepInfo
    [nothing changed in EVStepInfo]
  Rewriting ShotInfo
    [nothing changed in ShotInfo]
  Rewriting FilterInfo
    [nothing changed in FilterInfo]
  Rewriting LevelInfo
    [nothing changed in LevelInfo]
  Rewriting PixelShiftInfo
    [nothing changed in PixelShiftInfo]
  Rewriting AFPointInfo
    [nothing changed in AFPointInfo]
  Rewriting UnknownInfo
    [nothing changed in UnknownInfo]
    [nothing changed in MakerNotePentax5]
    [nothing changed in ExifIFD]
  Rewriting GPS
    [nothing changed in GPS]
  Rewriting IFD1
  Rewriting IFD2
    [nothing changed in IFD0]
  Copying 2 image data blocks
Nothing changed in c:/test/IMGP1448.PEF
    0 image files updated
    1 image files unchanged

[StarGeek]

You have a + after the equal sign that shouldn't be there. See this example command.

Example

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C:\>exiftool -G1 -a -s -Time:All y:\!temp\Test4.jpg
[System]        FileModifyDate                  : 2024:09:15 12:23:06-07:00
[System]        FileAccessDate                  : 2024:09:16 20:11:46-07:00
[System]        FileCreateDate                  : 2006:10:31 16:37:23-07:00
[IFD0]          ModifyDate                      : 2024:09:16 12:00:00
[ExifIFD]       DateTimeOriginal                : 2024:09:16 12:00:00
[ExifIFD]       CreateDate                      : 2024:09:16 12:00:00

C:\>exiftool -P -overwrite_original -time:all+=7:00 y:\!temp\Test4.jpg
    1 image files updated

C:\>exiftool -G1 -a -s -Time:All y:\!temp\Test4.jpg
[System]        FileModifyDate                  : 2024:09:15 12:23:06-07:00
[System]        FileAccessDate                  : 2024:09:16 20:12:18-07:00
[System]        FileCreateDate                  : 2006:10:31 16:37:23-07:00
[IFD0]          ModifyDate                      : 2024:09:16 19:00:00
[ExifIFD]       DateTimeOriginal                : 2024:09:16 19:00:00
[ExifIFD]       CreateDate                      : 2024:09:16 19:00:00
The file system time stamps have not been changed because they are marked as Unsafe to copy/edit. You must explicitly change them separately in the command.