Normalised contribution to each ℓ of C(ℓ) for κ–κ (top) and κ–y (bottom) as a function of scale k, redshift z and (comoving) distance r. The lensing is taken from KiDS galaxies for redshifts z = 0.1 → 0.9. Each of these curves is the normalised integrand in Eq. (D.7) re-expressed as a function of either k, z or r (so dC(ℓ)/dk, dC(ℓ)/dz, dC(ℓ)/dr). In practice, we carry out our integration in r between the observer and z(r) = 9 and we checked that our integrations are robust to this upper limit. The power spectra being integrated are set to zero for k <  10⁻⁴ h Mpc⁻¹ and k >  10² h Mpc⁻¹ and again our results are robust to this. Note the generally broader and lower–z contributions for κ–y compared to those for κ–κ.