[digiKam-users] Is changing the date of a photo a destructive process?

Maik Qualmann metzpinguin at gmail.com
Wed Mar 7 17:50:25 GMT 2018

The BQM needs a target file. If there are no image editing tools in the tool 
list, a copy is made from the source file and no changes are made to the image 
data. Even overwrite mode to the target file is safe.


Am Mittwoch, 7. März 2018, 16:54:30 CET schrieb woenx:
> Hi again,
> I have been doing some tests, comparing images before and after the date was
> changed in the Batch Queue Manager using an image comparer (
> http://www.softpedia.com/get/Multimedia/Graphic/Graphic-Others/Image-Compare
> r.shtml
> <http://www.softpedia.com/get/Multimedia/Graphic/Graphic-Others/Image-Compa
> rer.shtml> )
> The file generated after a date change is identical to the original, not a
> single pixel was changed. File size is different due to changes in the
> metadata, but that's it.
> As a comparison, I tried to open and save the same JPG picture using
> Microsoft Paint, and the image comparer found lots of differences to the
> original.
> Therefore, I conclude that changing the date in digikam is a lossless
> process.
> PS: now, if only the date changing process were more intuitive in digikam...
> --
> Sent from: http://digikam.1695700.n4.nabble.com/digikam-users-f1735189.html

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