Problems with backup of RAW files

[herb]

Hello Phil,

I work with Exiftool 10.86 on a Windows 7 64-bit system.
In order to verify that my C++ application does generate proper Exiftool commands, I did some regressiontests and I found the following strange behaviour which I could also reproduce in DOS-box:
- I have a *.orf file: image.orf
- I called exiftool with following parameter:

Code Select Expand

-tagsfromfile @ -All image.orf
  and Exiftool responded: 1 image files updated

- Now I have a problem opening the backup image.orf_original with IrfanView and also with XnViewMP
  IrfanView says: Decoding error; wrong or unknown TIF File
  XnViewMP says: Error opening file

The original image can be opened in IrfanView and XnViewMP and also
the modified image file can be opened with both applications.

For all 3 files - the original, the modified and the backup file - Exiftool does not give warnings or errors.

Now I need your help: Please have a look into the described problem.
Thanks in advance.
I will send the *.orf image with mail.

Additional info:
I have this problem also with *.cr2 and *.nef images. But I did not work with other RAW-files.
As I did not such tests for a long time, I cannot say when the problem/error occurred first.

Best regards
Herb

[herb]

Hello Phil,

I regret, that I have opened this topic.
It is NOT a problem of Exiftool. It is a problem with IrfanView and also with XnViewMP.

Both applications have problems to open an image when the file-extension does not fit to file content.
In a previous version of IrfanView such files could be opened.

Sorry again for making so much noise.

Maybe it is better to delete this topic.

Best regards
Herb

[Phil Harvey]

Hi Herb,

I'm glad you solved the problem.

I think it would be useful to leave this post up in case someone else has this problem with IrfanView or XnViewMP.

So this was a TIFF file that was named .orf?  I could perhaps put a check for this in ExifTool.

- Phil

[herb]

Hello Phil,

thanks for your understanding.

The file I worked with, is really a *.orf image. It was NOT renamed.
I do not know/understand why IrfanView talks about a TIF file.

For me no further check is necessary in Exiftool.

Thanks again and
Best regards
Herb

[Phil Harvey]

Ah, I understand now.  Sorry, I didn't read your first post carefully enough.  You had problems opening an ORF file with a ".orf_original" extension.  Right.  That makes sense.

- Phil