This trophy requires you to take a single photo which you would do if you are collecting all the Lucky emblems as well as the Trophy for taking 50 photos - "Lasting Memories"
You are unable to do this until you unlock the camera after you have finished in Mount Olympus and are heading to Twilight town.
When you have unlocked the camera, click the touchpad button on your PS4 controller in and the camera will pop up. YOu can press
to snap a photo and unlock the trophy.