  We present here the results about the determination of the Luminosity
Function (LF) for elliptical galaxies in the core of fairly rich clusters as a
function of redshift and try to compare with the known LF of close, better
studied clusters of galaxies. We then outline the first use of a new method of
selecting member elliptical galaxies using an unsupervised Artificial Neural
Network (ANN) working on a purely photometric set of data.
