Dependence of the extinction on distance for the investigated area up to 5.5 kpc for 584 stars with two-dimensional classification, measured in the Molėtai telescope exposures. The two broken curves show the limiting magnitude effect for A0 V at V = 15 and 16 mag. The exponential extinction formula of Parenago (1945) for the Galactic latitude b = 4°, A_V = 1.25 mag/kpc and the scale height 100 pc is shown.