gimp uses 85% quality as a default one for a jpeg image, it might be that your camera is using a 100% quality by default, try changing this setting (use the Save As option). the DPI is just a way of telling other application how big (in dimensions, not the filesize) the image really should be (after printing for example)

On 7/19/07, Jeffery Small wrote:

I am using the 2.3.18 development version of gimp on a SPARC Solaris system, but I also see this with the 2.2.15 version as well.

I have a 4MB jpeg file created with my Minolta 7D camera. I load it into Gimp and then immediately save it. The resulting file is now only 482kB in size! When I use exiftool to examine the exif data, I see the following unexpected changes:

Original Version Saved Version --------------------- --------------------- File Size: 4 MB 482kB X Resolution: 72 300 Y Resolution: 72 300 Minolta Image Size: Large Medium Focus Mode: Manual Single-Shot AF ISO Setting: Auto 800 Free Mem. Card Images: 300 1 Rotation: Horizontal (normal) Unknown (0) Image Number: 3 4 Image Number 2: 5523 3

The saved version also reports:

Warning : [minor] Possibly incorrect maker notes offsets (fix by -94?)

It appears that the development version of gimp is messing up the exif header in a number of ways. But why is the file being truncated to such a degree? Is there something I have set incorrectly that is causing this? Is there a preference setting for a default level of jpeg compression? In both cases the image size is being reported as 3008x2000 but note the difference in the DPI resolution. I feel as though I must be missing something obvious. Thanks for any pointers you can offer.

Regards, --
Jeffery Small

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