This article uncovers a few methodological possibilities for a so-called sensitive ethnographic approach to urban spaces. It reports on an ongoing field investigation. The reflection starts by questioning the description of sensitive and affective occurrences during urban walks and observations. While moving through the city, the researcher perceives different types of « contacts » that make up part of the sensitive material in the city. Photography and video reveal for our consideration other registers of sensitive phenomena, such as the prevailing ambiance and the distribution of mutual engagements. Finally, the question of participation in the ordinary « common being » raises the micropolitical implications of urbanness.