Michael Gessner’s Masse sheds sharp new light on the signifiers of surveillance embedded in everyday life. Conceived as a sociological exploration of mass behaviour in the digital age, the photo book invites contemplation on the myriad ways in which individuals are monitored – and in which they monitor themselves – as they transition through the blurred boundaries between the digital and the physical. Across Gessner’s works, the restrained seduction of his visual language, executed with unfaltering precision, contrasts starkly with the complexity of the subject his camera examines. Lured into a conceptual panopticon, the viewer looks in from the edge and gazes out from the centre of the mass; at once the observer and the observed.