Abstract
We present new results on the optimization of broad-band photometry observations designed to analyze the physical properties of galaxies at different redshifts. We have computed the uncertainties expected in the derivation of the star formation history (SFH), age, metallicity, and reddening of galaxies when comparing broad-band photometry with the predictions of evolutionary synthesis models as a function of (1) the observables available, (2) the observing errors, and (3) the galaxy properties themselves.
