https://bugs.kde.org/show_bug.cgi?id=488662
Bug ID: 488662
Summary: Incorrect Thumbnails showing on scanned Tiff files
Classification: Applications
Product: digikam
Version: 8.3.0
Platform: Microsoft Windows
OS: Microsoft Windows
Status: REPORTED
Severity: normal
Priority: NOR
Component: Database-Albums
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Hi,
I've recently started digitising my archive of film negatives, mainly 35mm. I
am using an Epson V600 flat bed scanner and Epson Scan 2 software. The scanner
is set to High quality, 24 Bit Colour, 3200dpi and the output set to save as
Tiff and Adobe RGB colour space.
When I look at the files in Windows File Explorer everything is fine and as
expected.
When I import the files into digiKam as Albums most of the scans are fine,
however with a significant number (between 10 and 20 percent) of the images the
thumbnails shown in the Album view of digiKam do not relate to the photo. If
the file is opened in editing software (I've tried a few) the file always opens
as the correct image.
I've tried several ways within digiKam to try and correct the issues in the
Album view, including a complete uninstall of digiKam and deleting of the
database and all the xmp files attached to the scanned photos on a secondary
installation I have on a Windows 11 laptop. Upon re-installation the problem
was still present.
If I refresh an Album sometimes the files affected with incorrect thumbnails
are changed.
The only way I have found, so far, of solving the issue is to batch convert in
Affinity Photo 2 all the files in every Album of scanned images to 16bit Tiff.
This seems to correct all the problems as the thumbnails for both original
scans and the processed tiffs are correct.
Just for information I still use film occasionally and I get the processed
images returned as high quality Tiffs. I've not had a problem with any of these
images.
Windows:10 & 11
macOS:
Linux/KDE Plasma:
(available in About System)
KDE Plasma Version:
KDE Frameworks Version:
Qt Version:
Alan
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