Résumé
Strong gravitational lensing images are subject to shape distortions due to inhomogeneities along the line of sight. The leading order shape distortion is shear, which, if measurable, will be a complementary cosmological probe to traditional cosmic shear. In Hogg et al. (2025a), we modelled 23 of the SLACS strong lenses, studying the line-of-sight (LOS) shear under a variety of shear and mass model parametrisations. In this work, we model 27 additional lenses, extending our sample of LOS shear constraints to 45 in total. We find a mean shear magnitude of$0.11\pm 0.024$ , showing that a significant fraction of the lenses modelled in this work possess LOS shears with unexpectedly large magnitudes,$|γ_{\rm LOS}| > 0.1$ , even when an octupolar distortion is included in the lens mass. We further investigate if factors such as lens and source redshift, filter and PSF, or flux and signal-to-noise ratio in the lensed arcs correlate with shear. We find that none of these features play a statistically significant role in the production of unusually large shear magnitudes.