  We present the results of a multi-colour (VIZ) survey for low luminosity
(M_B<-23.5) quasars with z~5 using the 12K CCD mosaic camera on CFHT. The
survey covers 1.8deg^2 to a limiting magnitude of m_z=22.5(Vega), about two
magnitudes fainter than the SDSS quasar survey. 20 candidates were selected by
their VIZ colours and spectra for 15 of these were obtained with GMOS on the
Gemini North telescope. A single quasar with z=4.99 was recovered, the
remaining candidates are all M stars.
  The detection of only a single quasar in the redshift range accessible to the
survey (4.8<5.2) is indicative of a possible turn over in the luminosity
function at faint quasar magnitudes, and a departure from the form observed at
higher luminosities (in agreement with quasar lensing observations by Richards
etal (2003)). However, the derived space densitys, of quasars more luminous
than M_B(Vega)<-23.5, of 2.96x10^-7 Mpc^-3 is consistent at the 65% confidence
level with extrapolation of the quasar luminosity function as derived by Fan
etal (2001a) at m_i<19.6(Vega).
