Berthoud, AlainBurri, SamuelBruschini, ClaudioBerne, AlexisCharbon, Edoardo2012-06-122012-06-122012-06-12201110.1364/ISA.2011.IMA2https://infoscience.epfl.ch/handle/20.500.14299/81721We present a new environmental application of SPAD imagers, the continuous measurement of size and shapes of hydrometeors. A first 32×32 pixel prototype allows real-time operation at very low light levels, 6000 fps and 1:100 average data reduction.text::conference output::conference proceedings::conference paper