Figure-of-merit, f, as a function of σ_ϵ. f is normalized by its minimum value which corresponds to using COSEBIs with the correct covariance (the solid line). The intrinsic ellipticity dispersion of galaxies, σ_ϵ, is varied with respect to its true value, 0.3, to show the effects of using a wrong covariance. The markers show the value of f for first order, F, second order, S and the combination of both E^c CCOSEBIs.