Photometry results of the extraction of the ESZ-XMM clusters using the proposed X-ray matched filter with the individual cluster profiles and assuming the position and size of the clusters are known. The four panels are analogous to those in Fig. 4. The top right panel includes in this case two histograms, one corresponding to the whole ESZ-XMM sample (black) and another corresponding to the ESZ-XMM-A subsample (red), which includes the clusters well within the XMM-Newton field of view.