Relation between the visually estimated barlens size (semimajor axis of the fitted ellipse) and the barlens effective radius that comes out in our decompositions. The dashed line shows the relation R_e = 0.36a, which was obtained by a linear fit, to the values obtained in the decompositions in which barlens R_e was a free parameter. The linear correlation coefficient between R_e and a is 0.83.