I've found an app that lets you use any of your photo editing apps on the Mac as extensions when editing a pic within Apple's Photos app. See https://itunes.apple.com/au/app/external-editors-for-photos/id1074021862
I've found an app that lets you use any of your photo editing apps on the Mac as extensions when editing a pic within Apple's Photos app. See https://itunes.apple.com/au/app/external-editors-for-photos/id1074021862