68% (inner) and 95% (outer) 2D confidence regions and 1D posteriors for ΛCDM with marginalisation over galaxy biases, using MCMC (blue) and the Fisher analysis (orange), with only contributions from just standard terms (dashed) and with standard terms plus lensing magnification (solid). The dashed black lines denote fiducial values of the cosmological parameters. The label “no magn” refers to an analysis that does not include magnification in the model despite the effect being present in the data. The label “w/magn” incorporates magnification both in the model and in the data.