Reduced shear correction using the bispectrum perturbative approach (see Sect. 2.2) and using the forward model in the lognormal field approximation presented in Taylor et al. (2019). The data points are plotted at the geometric mean of the ℓ-bin boundaries. There is mild disagreement at intermediate ℓ-modes. This is to be expected given the approximations that go into the bispectrum fitting formula and the lognormal field approximation. Nevertheless the agreement at low-ℓ and in the highest ℓ-bin are striking. Here labels the reduced shear auto-correlation spectrum, while denotes the shear-shear auto-correlation spectrum.