This conference is devoted to the latest developments in photodetection techniques down to single photon, through the entire electromagnetic spectrum. Domains of interest are in the field of Nuclear and Particle Physics, Astrophysics, Medical applications, Biology instrumentation, Industrial applications and other emerging fields. It explores: - Detectors: PMTs, Hybrid photodetectors, SiPM devices, solid state detectors, gaseous photodetectors, organic detectors and new sensing media, - Systems and instruments: pixel arrays, front-end electronics, signal and image processing and fast timing technics.