I recently bought a D850 and am still learning. I have the XQD card, but no card readers are available here (Bangkok) as yet. The cable transfer to Mac is fine for now. I have tried copying images from the XQD card to SD card, but I was disturbed to see that the file date was changed. This could be problematic for evidence use, or other reasons: metadata is metadata and should be trusted. Does anyone have comments/suggestions; or is the creation date embedded in the file somewhere and I have not been able to see it?