Rosher worked at several studios, but spent the last twelve years of his career exclusively at Metro-Goldwyn-Mayer, photographing such films as Annie Get Your Gun, Show Boat, Kiss Me Kate, and The Yearling.
Rosher bekerja di beberapa studio, namun menjalani dua belas tahun terakhir dari kariernya secara eksklusif di Metro-Goldwyn-Mayer, memfoto film-film seperti Annie Get Your Gun, Show Boat, Kiss Me Kate, dan The Yearling.