Convergence map for the lens mass model of MG B2016+112. The field-of-view is 6 arcsec × 6 arcsec. The white contours are the 1.7 GHz observations at Epoch 2, while the black contours are the critical and caustic curves. The filled magenta circle indicates the location of the source components. The white labels indicate the groups of lensed images (A, B and C), and the black labels identify the two lensing galaxies (D and G1), also shown by the convergence peaks.