Comparison between the DES Wide data set and our transformations in flux and colour space. The figure shows the distribution of the DES Wide data set (orange), compared with the multi-passband transfer data set introduced in this paper (blue), and the wide-like data set generated using the single-passband transfer (green), where f_X and f_e, X indicate flux and flux error in passband X. The number on the top or right axis of the sub-figures indicates the corresponding magnitude.