First column: observed images of NGC 4370, overlaid with contours of the corresponding dust-free MGE model. The contour levels are the same for all bands. 2nd column: residuals of the MGE models and the observed images. 3rd column: corresponding dust mass maps in the foreground screen geometry and at the critical 1 arcsec resolution. 4th column: corresponding dust maps in the uniform star-dust mix geometry. The white dots indicate masked foreground stars.