Relative magnitudes of the first-order corrections ﹩{\rm{\Delta }}{L}_{{\rm{\max }}}^{(1)}﹩ on the canonical version of ﹩{L}_{{\rm{\max }}}^{(0)}﹩ (G. Vacanti et al. 1994) for a maximally inclined muon (ν = 4°) imaged by a Small-Sized Telescope (SST) camera, for two different azimuthal projections ψ of the muon incidence angle on ground and different photon emission angles with respect to the muon-impact point on the mirror, ϕ–ϕ₀. The primary mirror of the SST has been approximated to a parabolic shape. The color-coded legend on the right side applies to both panels, however, some angles show a degeneracy and are therefore not visible on the left-hand side.