Comparison of z_s = 0.8 convergence maps obtained with the OBB method (integration of transverse accelerations in cells, left) and with the SPL method (projection of particles onto convergence planes after adaptative Gaussian smoothing, right). The latter method applies a more aggressive smoothing that better erases shot noise. Inaccuracies of long-range deflections in the SPL method that are due to edge effects translate into a global shift for some galaxies, as compared to OBB. With this method, some missing acceleration cells occasionally produce modest artefacts on a small scale.