Bob Meetin schreef:
> See example images at www.dottedi.biz/codesamples/broken
> The image (vanilla) was taken with an ordinary digital slr. I know it
> is large - if you check the other image, same problem. It is 300dpi.
> You can see this if checking with windows image properties or with
> photoshop. However, when I check in Gimp (2.2) using
> Image --> Scale Image
> both horizontal and vertical display as 72.
> When I load some stock images into Gimp they are correctly display the
> resolution, be it 150, 300, whatever. So the question, "What is it
> about this image that is fooling gimp?" Is it a setting in Gimp that I
> might have innocently messed up or other?
Not only Gimp is confused. I've tried the images in IrfanView and
XnView. There is a difference between the two images:
- img1_resized.jpg: both XnView and IrfanView think it's 72x72. PIL, the
Python Imaging Library, thinks it's 72x72 too.
- img1_vanilla.jpg: XnView says ??? x ???, IrfanView leaves the boxes
empty, PIL has no DPI information.
That's without looking into the EXIF-data. When I look there, both
XnView and IrfanView have XResolution = 300 and YResolution = 300 in
So the difference between Gimp on one hand and Windows image properties
and PhotoShop on the other hand seems to be that the others extract the
resolution-information from the EXIF-data while the Gimp doesn't.
If I have been able to see further, it was only because I stood
on the shoulders of giants. -- Isaac Newton
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