Sensitivity to the quasar image separation θ_LP of the lens search method using both spatial extent and the number of blobs. Bright: the group of lensed quasars with the third brightest image brightness m_3rd <  22.0 mag. Faint: the group of lensed quasars with 22.0 mag ≤ m_3rd <  24.0 mag. The top panels show the TPRs of each θ_LP bin, when p_thrs% = 0% and N_thrs = 4, with the preselection by the number of blobs N_crit = 2. The bottom panels show the number of mock lenses in each θ_LP bin.