There's never been any limitation preventing access to data inside the iPhoto Library. The library is simply files in directories with a database to glue it tog

There's never been any limitation preventing access to data inside the iPhoto Library. The library is simply files in directories with a database to glue it together. I've used software such as exiftool / photorec to yank data out of iPhoto libraries many times. There are also a variety of different applications that can read/write iPhoto Libraries so the database files must not be anything too special. For the Photos app the original imported photos by year / month / day / event. Masters/ ├── 2015 └── 04 └── 04 └── 20150404-220940 ├── IMG_5423.JPG ├── IMG_5424.JPG