Depth of gaps opened by putative giant planets in the disk of SAO 206462 as a function of the planet-to-star mass ratio computed from the empirical relations in Fung et al. (2014) for the two cases considered in this paper (see text). For the pessimistic case (dashed curve) and a planet-to-star mass ratio below ~3.5 × 10^-3 (i.e., planet mass below ~6 M_J), a planet cannot open a gap in the disk, hence the dust column density above the planet is not reduced.