Between 1876 and 1886, transitional years in the history of 19th century prison photography, changes took place in the way Thomas Nevin posed the prisoner and printed the final mugshot. The technology changed too. Lenses after 1875 enabled a closer or larger image of the face. The prisoner was also posed closer to the camera in a full frontal position facing the photographer, and although the oval mount was still the preferred format for printing, square frames were also used. The formalised front and profile pair of portraits using the methods of Bertillonage did not appear in Tasmanian prison photography until the late 1890s, by which time Thomas Nevin had ceased professional photography and his younger brother John Nevin was deceased. … More Nevin’s mugshots: the transitional pose and frame