Originally Posted by
Donald
Blake.
One question to consider is - If you are working them in the GIMP, why don't you take the TIFF that you made in DPP and 'Save' it. That then defaults to GIMPs native .xcf format. And although you can work with a TIFF in the GIMP, I find that it's better to save it as an .xcf. That then gives you more options for going back to it and re-editing etc.
GIMP will not open RAW files.
However, if you want to work on it as a TIFF and then save what you do, you don't you 'Save' or 'Save As'. You need to use 'Export' or Export to'. The Save and Save as only allow you to save as .xcf. With Export you can save it any one of the many formats that are presented in the drop down 'Save as type' dialogue (Tiff, PNG, JPEG, etc etc).
If this isn't addressing the problem you have, sorry. Can't think what else the problem would be.