I was about to suggest the same thing. GIMP only ever displays the image
onscreen relative to its raw image pixels and zoom % (ignoring any physical
print resolution / dpi). If all you do is change the print resolution of your
image, the image's size and data (in pixels) remain unchanged, thus there is no
visible change in how GIMP displays it. Conversely, any time you resize/scale
the image itself -- even if you also change the resolution to maintain a fixed
print size -- the image as seen in the GIMP window obviously changes, because
it's displayed relative to image pixels and zoom % only.
An option to adjust GIMP's current zoom level to reflect changes in the current
print resolution might be an idea here -- the least obtrusive method could be
just a checkbox ("Zoom to new size" or something) on the Scale Image and Print
Size dialogs....
-- Stratadrake
strata_ran...@hotmail.com
--------------------
Numbers may not lie, but neither do they tell the whole truth.
> Date: Thu, 13 Aug 2015 02:27:10 +0200
> From: for...@gimpusers.com
> To: gimp-user-list@gnome.org
> CC: notificati...@gimpusers.com
> Subject: [Gimp-user] reduce resolution while retaining image size on computer
>
> I think I may have figured out the answer. What I'm trying to do is the
> equivalent of taking a screen grab of a 15mb tiff image, which turns it into a
> obviously lower quality tiff image of the same dimensions. Is the equivalent
> of
> achieving this with gimp to simply reduce the dimensions and then use the zoom
> function to enlarge the smaller picture? Is that effectively what "Grab" does?
>
> Thank you
>
> --
> chrislz (via www.gimpusers.com/forums)
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