This paper seeks to explore how we might understand young people's agency in sexuality research using visual methods. It is concerned with troubling the perception that power is held by the adult researcher and denied to youthful participants who simply submit to their authority. Rather than attempting to cast moments of young people's agency as examples where the relations of ruling are reversed, this paper endeavours to tease out the nuances inherent in young people's agency. This examination is undertaken in relation to selected episodes from research investigating the sexual culture of secondary schools using photo-diary and photo-elicitation methods. To elucidate the mechanisms of young people's agency, Butler's and Davies' work on the process of subjectification is drawn upon. Using a post-structural theoretical framework, it is argued that young people's agency involves a simultaneous mastery and submission, which is a consequence of the process of subjecthood. (Contains 5 notes.)