ALMA continuum maps at 1.1 mm for five FF clusters, made with natural weighting. Images are displayed without PB sensitivity corrections. Color scale goes from blue to red, corresponding to −5σ to 5σ. A white contour in each map encloses the region with PB > 0.3, that is, where the PB sensitivity is at least 30% of the peak sensitivity. Source positions are displayed in blue as squares (high significance) or circles (low significance). A small box in the bottom left corner of each panel shows the synthesized beam (see parameters in Table 1). Green lines indicate the critical curves (i.e., infinite magnification) for a z = 2 source plane in the Diego v4.1 lens model (see references in Table 3).