3 × 6 arcmin² of the 1 deg² CFHTLS D1 deep field in RGB (using the i′, r′, g′ filters). This shows the diversity of sizes, shapes, and colors that we can use to perform a deep statistical study of the various galaxy populations. This image reveals the complexity of the object distribution and the huge wealth of information that is available in such a field. This complexity presents a barrier in the methods we used to constrain the parameters of the luminosity functions for each population of galaxies.