Analysis of the shear estimation errors on the CGC branch of GREAT3. In each panel, points show the residuals of the average estimated shears against the true shears of the 200 subfields. The different panels show different components of the shear, in the frame of the pixel grid (g₁ and g₂) and in a frame rotated to be aligned with the PSF anisotropy (g₊ and g_×), as defined in Sect. 2.2. The residuals are shown on a linear scale within the shaded area, and using a logarithmic scale outside of this region. The leftmost panels show residuals of unweighted average shears, i.e., ignoring the weights predicted by the second step of the algorithm. In all panels, colors of the datapoints encode the size of the PSF, with darker colors corresponding to broader PSFs. The infamous subfield labeled “2” has the worst PSF of this GREAT3 branch, with a strong defocus.