This image is not wrong. Most of the cultural anthropologists go to other countries to study the local people: what they eat, their familial values, how they view gender, etc.
Anthropology is divided into two main fields: biological anthropology and cultural anthropology. The first one studies congenital traits, by researching bones and DNA for example. The second one is often called sociocultural anthropology in English-speaking countries. It studies people’s acquired traits, their ways of thinking, for example, their humor.
Cultural anthropology is studying how people think. Why? To understand human beings.