I have seen mention of the the Photos app "optimising" images when it up loads camera files via the Camera Connection Kit.
Does this mean that the JPG files are altered? I assume that the RAW files are not changed.
Also, is there a way to copy files from the the Photos app to an external drive or network drive? The usefulness this depends on the answer to the original question.
I had originally planned to use the iPad as a backup device for my photos while traveling. There seem to be quite a few reasons why this isn't a practical idea, this might be another one.