[digiKam-users] Image resolution change

[Remco Viëtor]

On vendredi 23 août 2019 23:42:42 CEST Peter Albrecht wrote:
> Hello,
> 
> to change the resolution of a JPG image do the following steps (I am using
> digikam 5.9.0 at the moment):
> 
> 1. open the image in the editor (Menu > Item > Open...)
> 2. in the menu choose: Transform > Resize ...
> 3. enter new dimension on the right side
> 4. click "OK" button in the lower right corner
> 5. save the image
> 
> 
> If you have to change the resolution of several images, you can use the
> "Batch Queue Manager":
> 
> 1. in album view select one or more images
> 2. in the menu choose: Item > Add to New Queue...
> 3. select a tool in the lower right corner: Base Tools > Transform > Resize
> 4. configure new dimensions in the upper right corner
> 5. click "Run" button in the toolbar

With your procedure, you change the size in pixels, not the resolution...

On the other hand, a digital image doesn't have an intrinsic size in inches, 
only a size in pixels, so talking about the resolution (pixels/inch) of a 
digital image is a bit meaningless. 

Resolution plays a role when printing, in that printers can usually handle up 
to 300-360 pixels/inch. Good for paper when viewed from ~30cm, already 
overkill for canvas (where ~150 pixels/inch is the maximum), or posters veiwed 
from a larger distance...

Remco
> 
> On 23.08.19 20:33, Northern Colorado Event Photograph wrote:
> > I have digiKam 6.0.0 installed on a 64 bit Win 7 SP1 computer with i5
> > processor and 8 GB of RAM.
> > 
> > Is there any way to change the resolution of an image (either RAW or JPG
> > or
> > both) using digiKam?
> > 
> > I looked through the documentation (https://docs.kde.org/) and I tried
> > several online searches using different search criteria, but I did not
> > find
> > any results.
> > 
> > Perhaps I missed something.  Can anyone help?