Three-arcsecond false-colour cut-outs of all the galaxies with high S/N and with available JWST/NIRCam photometry, sorted by increasing redshift z (targets 4270 and 16745 are reported already in Figs. 1 and 2 and are not repeated here). The nominal location of the shutters is overlaid; the MSA acquisition accuracy is better than one NIRCam pixel (0.03 arcsec). This figure illustrates the key synergy between NIRCam and NIRSpec/MSA; this imaging clarifies that, for individual galaxies, gradients along the slit may result from complex morphologies. However, because the intra-shutter positions are effectively random between different targets, a stacking analysis over a sufficiently large sample may ‘marginalise’ over peculiar morphologies.