First row: observed (not reddening-corrected) ionization ratio [O iii] λ5007/Hβ for the five galaxies. Second row: interstellar extinction A_V map, computed from the Hβ/Hγ ratio. Row three: velocity field (in km s^-1) of the ionized gas [O iii] λ5007 emission line, except for III Zw 102 for which the Hβ velocity field is shown. Row four: stellar velocity field. Axis units are arcseconds. The solid line in the gas velocity map of NGC 4670 is the isovelocity contour at V = 1050 km s^-1 (see text for details).