In 1860, after Felice Beato left for China to photograph the Second Opium War and Antonio Beato went to Egypt, Robertson briefly teamed up with Charles Shepherd back in Constantinople.
Roku 1860, potom čo Felice Beato odišiel do Číny, aby fotografoval Druhú ópiovou vojnu a António Beato odišiel do Egypta, Robertson sa nakrátko vrátil s Charlesom Shepherdom späť do Konštantínopolu.