Left: Comparison of the transverse momentum smearing correction ($C_{\rm res}$) contained in the photon efficiency for the V1 (lines) and V2 (points) clusterizers in pp collisions at $\sqrt{s} = 13$ TeV. The different colors indicate different shower shape selections Right: Relation between reconstructed cluster and true photon momenta for photon candidates reconstructed with the V2 clusterizer.