Left panel: continuum contrast at 525 nm. Right panel: its co-spatial and co-temporal longitudinal magnetic field map retrieved from the inversions. The black boxes (solid lines) contain small pores characterized by contrast below unity and kG magnetic fields. The dashed green box encloses an area with emerging flux. The dashed yellow ellipse outlines a region of plage composed of magnetic elements embedded in intergranular lanes. The dashed red box contains a quiet-Sun internetwork region with weak fields (average of 20 G) and mean contrast of unity (by definition).