Sample density of the ratio ε^MMT/ε^CFHT of the complex ellipticities measured for the matched galaxies from the MMT and CFHT r′-band catalogues, respectively. The shaded contours correspond to the logarithmic densities of all galaxies from the MMT lensing catalogue which have a match in the CFHT catalogue. Solid contours give the density of galaxies detected with a signal/noise ratio of ν > 15, the top 32.6%. Note that the normalisation of the ν > 15 galaxies is scaled up by 1/0.326 to obtain the same logarithmic contour levels. A Gaussian smoothing kernel of full-width half-maximum 0.075 was applied to both contour maps.