Magnitude-rms plot of a dense pointing in the VMC, where the fitting function turns over before the expected magnitude limit (dotted vertical line). The old expected rms as a function of magnitude is plotted as the dashed line, and the new expected rms as a function of magnitude is plotted as the solid line. Outside of the fitting range, or beyond the turnover point, the rms is a constant. Non-variable stars are shown as dots, and variables are shown as open squares. At the bright end, Y < 12.5 mag, the rms increases due to saturation effects, but this has not been included in the model yet.