Comparison of our metallicities with photometric metallicities from Gaia XP based catalogues such as Pristine Gaia Synthetic catalogue from MS23 (left), Table 2 giants catalogue from A23 (right), and dedicated CaHK based metallicity survey such as Pristine DR1 from MS23 (middle). The number of stars, median (μ₅₀) and 1σ standard deviation (σ) in Δ[Fe/H] and median uncertainties on the metallicity measurements (where available) is indicated at the top of each panel. The dashed lines shows the 1:1 line and coressponding ±0.5 dex offsets.