The photodissociation of CH2I2 at 248 nm is investigated using velocity map ion imaging with photoionization detection of the I* (P-2(1/2)) products. The velocity distribution of the I* products reveals that only a small fraction of the available energy is released as translational energy, consistent with a simple impulsive model. Most of the excess energy is channeled into internal excitation with < E-int > = 36.3 kcal mol(-1) for CH2I radical fragments produced with I* atoms. The anisotropy angular distribution of the I* fragments and corresponding positive anisotropy parameter are indicative of prompt dissociation and electronic state mixing. (C) 2013 Elsevier B. V. All rights reserved.