Top: examples of magnification patterns spanning each 5⟨R_Ein⟩, assuming the IMF ⟨M_⋆⟩ = 0.3 M_⊙ and r = 100. Bottom: source size R_λ and mean delay ⟨δt⟩_λ for each realization of the magnification pattern. The dotted line in black corresponds to the relation without microlensing, i.e. the geometric delay. The white circles in the top panels represent the effective radius 5.04(1 + z_S)R_λ = 2.315 light-day, and the vertical black line in the bottom panel indicates R_λ = 0.277 light-day (see text).