Comparison of the precision of the shape measurements methods used in this work, obtained by running them on 400 noisy realizations of always the same galaxy and PSF pair. MMD results are shown in grey, SEWIN in red. The shape parameters measured by MMD are rescaled so that their variance can be equitably compared to the variance of the SEWIN ones (see text). The vertical lines indicate the 20 bins in each coordinate, as used for all applications to GREAT10 described in this paper. See Fig. 1 for a description of the coordinates.