https://bugs.kde.org/show_bug.cgi?id=384092

christian.pietz...@gmail.com changed:

           What    |Removed                     |Added
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                 CC|                            |christian.pietz...@gmail.co
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--- Comment #4 from christian.pietz...@gmail.com ---
I've done an experiment. I change the metadata of a raw file once directly with
exiv2 and once with Digikam.
The result was that the Digikam file got corrupted and the command line one
didn't.
https://www.dropbox.com/s/twy49qw7ecnqpf7/Metadata%20Digikam.ARW?dl=0
https://www.dropbox.com/s/1dyz2d90glim04i/Metadata%20exiv2.ARW?dl=0
The exif output is the same in both. Terminal output below.
It's Digikam specific as far as I can tell.

(In the output the picture with _2 was edited by Digikam and the other one by
exiv2)

[#]$ exiv2 DSC04326.ARW
File name : DSC04326.ARW
File size : 20676608 Bytes
MIME type : image/tiff
Image size : 5504 x 3656
Camera make : SONY
Camera model : SLT-A58
Image timestamp : 2017:09:18 04:44:44
Image number :
Exposure time : 1/20 s
Aperture : F11
Exposure bias : 0 EV
Flash : No, compulsory
Flash bias : 0 EV
Focal length : 40.0 mm (35 mm equivalent: 60.0 mm)
Subject distance:
ISO speed : 640
Exposure mode : Auto
Metering mode : Multi-segment
Macro mode :
Image quality : n/a
Exif Resolution : 5504 x 3656
White balance : Cloudy
Thumbnail : image/jpeg, 6128 Bytes
Copyright :
Exif comment :

[#]$ exiv2 DSC04326_2.ARW
File name : DSC04326_2.ARW
File size : 20554786 Bytes
MIME type : image/tiff
Image size : 5504 x 3656
Camera make : SONY
Camera model : SLT-A58
Image timestamp : 2017:09:18 04:44:44
Image number :
Exposure time : 1/20 s
Aperture : F11
Exposure bias : 0 EV
Flash : No, compulsory
Flash bias : 0 EV
Focal length : 40.0 mm (35 mm equivalent: 60.0 mm)
Subject distance:
ISO speed : 640
Exposure mode : Auto
Metering mode : Multi-segment
Macro mode :
Image quality : n/a
Exif Resolution : 5504 x 3656
White balance : Cloudy
Thumbnail : image/jpeg, 6128 Bytes
Copyright :
Exif comment : test

[#]$ exiv2 -M"set Exif.Photo.UserComment charset=Ascii exiv2 write"
DSC04326.ARW
[#]$ exiv2 DSC04326.ARW
File name : DSC04326.ARW
File size : 20676608 Bytes
MIME type : image/tiff
Image size : 5504 x 3656
Camera make : SONY
Camera model : SLT-A58
Image timestamp : 2017:09:18 04:44:44
Image number :
Exposure time : 1/20 s
Aperture : F11
Exposure bias : 0 EV
Flash : No, compulsory
Flash bias : 0 EV
Focal length : 40.0 mm (35 mm equivalent: 60.0 mm)
Subject distance:
ISO speed : 640
Exposure mode : Auto
Metering mode : Multi-segment
Macro mode :
Image quality : n/a
Exif Resolution : 5504 x 3656
White balance : Cloudy
Thumbnail : image/jpeg, 6128 Bytes
Copyright :
Exif comment : exiv2 write

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