and that the relevant E(B-V) and basic stellar parameters (mostly age and star formation history, but also metallicity) can be simultaneously recovered with a multi-wavelength fit. We note that parameter degeneracies cannot be completely removed, especially at high redshift, even if our filter sets samples quite evenly the overall wavelength range involved. Previous studies (Shapley et al. 2003, 2001; Papovich et al. 2001) demonstrated that stellar masses are well constrained, while for other parameters the uncertainties become larger, especially at high redshifts, due to the SFR-age-metallicity degeneracies.\
In our analysis, we estimated SFR, AGE Mass, E(B-V) and metallicity using Charlot & Bruzual (2009 in preparation, hereafter CB09) synthetic models, fitting the whole 14 bands of photometry (namely U$_{3.5}$ and U$_{3.8}$ from the WFI on the ESO 2.2m telescope, U$_{VIMOS}$, ACS/HST B, V, i and z, VLT/ISAAC J, H and K, SPITZER/IRAC 3.5, 4.5, 5.8 and 8$\mu m$). Note that the catalog was produced using a specific software for the accurate "PSF-matching” of space and ground based images of different resolution and depth, named ConvPhot (De Santis et al. 2007). We assumed a Salpeter IMF and we parametrize the star formation histories with a variety of exponentially declining laws (of timescales 