Demonstration of recovered magnitude using aperture photometry (upper panel) and the PSF-fitting package (middle panel) from AutoPhOT. The F-axis shoes the derived zeropoint magnitude for each source. The bottom panel shows the difference between aperture and PSF-fitting photometry for this particular image. Solid lines show a moving mean value, with dashed lines indicating the standard deviation in each bin. Horizontal error bars show the uncertainty on catalogue magnitudes, vertical error bars are uncertainties on recovered magnitudes from AutoPhOT.