Distribution of the SM_{e,5000Å meas}/SM_{e,5000Å der} ratio as function of the redshift. SMR_{e,5000 Å meas} is the semi-major axis at 5000 Å rest frame measured directly on the images, while SM_e,5000Ådev is the same quantity, but inferred from F125W-band images using Eq. (2) from van der Wel et al. (2014). The blue histogram refers to ETGs at 0.5 <z< 0.7, while the magenta histogram refers to ETGs at 0.7 <z< 0.9. Solid lines are the median values of the distributions and dotted lines are the median value of the distribution at 25 and 75 percentile.