def reddening_correction_sf11(extinction_r):
    """ Compute the reddening values using the SF11 correction set.

        Parameters
        ----------
        extinction_r : array
            The uncorrected extinction values in the r-band.

        Returns
        -------
        A_u : array
            The corrected extinction values in the u-band.

        A_g : array
            The corrected extinction values in the g-band.

        A_r : array
            The corrected extinction values in the r-band.

        A_i : array
            The corrected extinction values in the i-band.

        A_z : array
            The corrected extinction values in the z-band.
    """

    E_BV = extinction_r / 2.751
    A_u = E_BV * 4.239
    A_g = E_BV * 3.303
    A_r = E_BV * 2.285
    A_i = E_BV * 1.698
    A_z = E_BV * 1.263

    return (A_u, A_g, A_r, A_i, A_z)