Left panel: the redshift offset between spectroscopic redshifts from MUSE and photometric redshifts from BPZ (blue) and EAZY (orange) from the R15 catalogue, and BEAGLE (burgundy) from Chevallard & Charlot (2016), all normalised by 1 + z_MUSE. The solid lines show the median as a function of redshift and the uncertainty on the median is shown by the shaded areas. Right panel: the same trends, but now using the recalibrated EAZY photo-zs from Sect. 4. The improvment is noticeable and all three codes lead to very similar trends in the bias as a function of redshift.