We present in this paper a performance characterization of an Electron Multiplication CCD (EMCCD) camera which has
been deployed on the Brazilian Tunable Filter Imager (BTFI) instrument for the SOAR telescope in Chile. The BTFI
instrument has two e2v CCD207 EMCCDs with a format of 1600-by-1600 pixels. The CCD207s are full-frame devices
and are read out at a pixel rate of 10MHz with very low noise using an EMCCD controller (the CCD Controller for
Counting Photons or CCCP for short) which was custom-built by a group based in the University of Montreal and is now
commercialized by Nüvü Camēras. The first laboratory characterizations were done in Montreal in October, 2011 and the
"first-light" results with the camera operating at the telescope are presented.