Shear correlation function ξ₊(θ) for KiDS-1000 (left, from Asgari et al. 2021), DES Y3 (middle, from Amon et al. 2022), and HSC Y3 (right, from Li et al. 2023b), and expected for Euclid. Each panel uses sources distributed according to the tomographic bin with the highest S/N of the respective survey. The S/N for Euclid is an order of magnitude larger than that of the most recent surveys. The other shear correlation function ξ₋(θ) shows a similar improvement in S/N (not shown).