Experimental portrait photographer born 1907; as a teenager posed for portraitist Constance Ellis and became interested in photography; studied Regent Street Polytechnic before opening studio in Swanage, Dorset; opened Cambridge studio Ramsey and Muspratt with Lettice Ramsey in 1932; documentary photography study of Soviet Union in 1936; married Labour activist Jack Dunman in 1937; retired from photography in 1970s.