David Zeitlyn is a Professor of Social Anthropology at the University of Oxford. Before moving to Oxford in 2010, he taught for fifteen years at the University of Kent, Canterbury, UK. His main fieldwork is in Cameroon where he has been conducting ethnographic and sociolinguistic research with Mambila people since 1985, and more recently with studio photographers in West Cameroon. He has also carried out some work on how people use technology in research, and has supervised a wide range of PhD topics.Roger Just is Emeritus Professor of Social Anthropology at the University of Kent, Canterbury, UK where he taught for ten years after having been a Senior Lecturer at the University of Melbourne, first in Modern Greek Studies, and subsequently in Anthropology. He undertook research in the late 1970s and early 1980s in rural Greece, and for three years was Assistant Director at the British School at Athens. He has also carried out work in Indonesia, and on artisan fishers in both Australia and East Kent.