Relation between the observed (not corrected for extinction) Hα and Paα tracers when using A/2 and CoG methods applied to a subsample of 12 galaxies. Lower limits on Hα measurements are due to the limited FoV of VIMOS. Top panels: as a function of when applying the A/2 (left) and CoG (right) methods. Bottom panels: comparison of the R_eff obtained using the CoG and A/2 methods derived for the Hα (left) and Paα (right). For each plot, the mean (and standard deviation) and median (M) values are shown. Galaxies containing an AGN are identified using an additional small black symbol. The black dashed line represents the 1:1 relation between the parameters considered. The colored dashed lines identify the trend obtained using a linear least square fit for each data type, which was derived, in this case, excluding the lower limits.