  We present a detailed study of the depletion effect (the radial manifestation
of the magnification bias) in the cluster MS1008-1224. Following our results
concerning the simulations of depletion curves (see Mayen and Soucail, 2000
(astro-ph/0003332) for a complete description of the code), we propose to
constrain the mass profile of the cluster and the main characteristics of its
potential (orientation and ellipticity). This application is based solely on
deep photometry of the field and does not require the measurement of the shape
parameters of the faint background galaxies.
