Question: can gimp open pef files?
Answer: Downloading GIMP & UFRaw UFRaw can be used as a standalone program and not needed with GIMP. You may decide to use GIMP to edit your images, but you won't need it for Raw conversion. Having GIMP isn't enough to open a Raw image. If you attempt to open a Raw file within GIMP, it will tell you there is no Raw uploader.