Photos for OS X is set to keep the originals.
I recently made a trip and during this trip, I opened photos from different years of our family to show to our friends… I was showing these photos to my friends on the iPhone 6+. I also took pictures while on this trip with the iPhone 6+… When I got home, I connected my iPhone to the computer and Photos wanted to import the new and old photos. These old photos already exist in Photos, no edits were done to them while on the phone. Now I have to remove these and I’m worried that in the future Photos will do the same and unless I am diligent, Photos will make a mess of my library.
I compared the old photo in Photos and old one that wanted to be imported again and the file name, dates are the same. The only differences were in the “Get Info” area of the Photos version, the description had the word duplicate(37954) and a keyword of iPhoto Original. Somehow when the photo was downloaded to the iPhone, it must have stripped the keyword and description.
I thought Photos for OS X was designed to eliminate duplicates, therefore, shouldn’t Photos have seen these were already in my Photos library and not flagged them for import? Was the keyword and description differences enough to make them look ‘different’ so Photos would want to import them? If thats the case and the process of downloading the photo into a mobile device ; thereby stripping some meta data, I will always have to deal with these older downloaded photos? What a pain.