Pham, L.D.Høibråten, S.Redwine, R.P.Tieger, D.R.van der Steenhoven, G.Wilson, K.E.Yuly, M.E.Federspiel, F.J.Eisenstein, R.A.Nathan, A.M.Wood, S.A.Beise, E.J.We report the first exclusive (γ,π-p) measurements on a complex nucleus. The 16O(γ,π-p) reaction was measured at pion laboratory angles of 64° and 120°. Coincident protons were detected over the quasifree angular correlation range using a vertical array of seven plastic scintillator detectors spanning ±33° about the scattering plane. The cross sections are compared to factorized distorted-wave impulse approximation calculations; these provide a good description of the backward angle data, but are in serious disagreement with the forward angle data.PhysicsNucleusPionArticle